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* smsc-ircc2: add PNP supportBjorn Helgaas2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Claim devices using PNP, unless the user explicitly specified device addresses. This can be disabled with the "smsc-ircc2.nopnp" option. This removes the need for probing legacy addresses and helps untangle IR devices from serial8250 devices. Sometimes the SMC device is at a legacy COM port address but does not use the legacy COM IRQ. In this case, claiming the device using PNP rather than 8250 legacy probe means we can automatically use the correct IRQ rather than forcing the user to use "setserial" to set the IRQ manually. If the PNP claim doesn't work, make sure you don't have a setserial init script, e.g., /etc/init.d/setserial, configured to poke in legacy COM port resources for the IRDA device. That causes the serial driver to claim resources needed by this driver. Based on this patch by Ville Syrjälä: http://www.hpl.hp.com/personal/Jean_Tourrilhes/IrDA/ir260_smsc_pnp.diff Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Keith Owens <kaos@ocs.com.au> Cc: Len Brown <lenb@kernel.org> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Matthieu CASTET <castet.matthieu@free.fr> Cc: Jean Tourrilhes <jt@hpl.hp.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Russell King <rmk+serial@arm.linux.org.uk> Acked-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* smsc-ircc2: tidy up module parameter checkingBjorn Helgaas2007-05-08
| | | | | | | | | | | | | | | | | | To determine whether the user specified a module parameter, use some #defines instead of checking for bare magic numbers. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Keith Owens <kaos@ocs.com.au> Cc: Len Brown <lenb@kernel.org> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Matthieu CASTET <castet.matthieu@free.fr> Cc: Jean Tourrilhes <jt@hpl.hp.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Russell King <rmk+serial@arm.linux.org.uk> Cc: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PNP: workaround HP BIOS defect that leaves SMCF010 device partly enabledBjorn Helgaas2007-05-08
| | | | | | | | | | | | | | | | | | | | | Some HP/Compaq firmware reports via ACPI that the SMCF010 IR device is enabled, but in fact, it leaves the device partly disabled. HP nw8240 BIOS 68DTV Ver. F.0F, released 9/15/2005 is one BIOS that has this problem. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Keith Owens <kaos@ocs.com.au> Cc: Len Brown <lenb@kernel.org> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Matthieu CASTET <castet.matthieu@free.fr> Cc: Jean Tourrilhes <jt@hpl.hp.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Russell King <rmk+serial@arm.linux.org.uk> Cc: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PNP: notice whether we have PNP devices (PNPBIOS or PNPACPI)Bjorn Helgaas2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This series converts i386 and x86_64 legacy serial ports to be platform devices and prevents probing for them if we have PNP. This prevents double discovery, where a device was found both by the legacy probe and by 8250_pnp. This also prevents the serial driver from claiming IRDA devices (unless they have a UART PNP ID). The serial legacy probe sometimes assumed the wrong IRQ, so the user had to use "setserial" to fix it. Removing the need for setserial to make IRDA devices work seems good, but it does break some things. In particular, you may need to keep setserial from poking legacy UART stuff back in by doing something like "dpkg-reconfigure setserial" with the "kernel" option. Otherwise, the setserial-discovered "UART" will claim resources and prevent the IRDA driver from loading. This patch: If we can discover devices using PNP, we can skip some legacy probes. This flag ("pnp_platform_devices") indicates that PNPBIOS or PNPACPI is enabled and should tell us about builtin devices. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Keith Owens <kaos@ocs.com.au> Cc: Len Brown <lenb@kernel.org> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Matthieu CASTET <castet.matthieu@free.fr> Cc: Jean Tourrilhes <jt@hpl.hp.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Russell King <rmk+serial@arm.linux.org.uk> Cc: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: cyclades, remove useless castsJiri Slaby2007-05-08
| | | | | | | | cyclades, remove useless casts Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: cyclades, remove volatilesJiri Slaby2007-05-08
| | | | | | | | cyclades, remove volatiles Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: cyclades, timer cleanupJiri Slaby2007-05-08
| | | | | | | | cyclades, timer cleanup Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: cyclades, cy_readX/writeX cleanupJiri Slaby2007-05-08
| | | | | | | | | | | cyclades, cy_readX/writeX cleanup - cy_readX are placeholders for readX, remove it - move cy_writeX macros into do {} while(0) to be safe Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: cyclades, remove PAUSEJiri Slaby2007-05-08
| | | | | | | | | | cyclades, remove PAUSE PAUSE expands to do {} while (0), it's useless. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* no longer #include <asm/kdebug.h>Adrian Bunk2007-05-08
| | | | | | | | | | Include the new linux/kdebug.h instead of asm/kdebug.h. Simply remove the asm/kdebug.h include if both had been included. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-cmos: make it load on PNPBIOS systemsMarko Vrh2007-05-08
| | | | | | | | | | Replace CONFIG_PNPACPI with CONFIG_PNP, so it loads on ACPI-less PNPBIOS systems. Signed-off-by: Marko Vrh <mvrh@freeshells.ch> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: remove "RTC_ALM_SET mode" bugsDavid Brownell2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a common glitch in how RTC drivers handle two "set alarm" modes, by getting rid of the surprising/hidden one that was rarely implemented correctly (and which could expose nonportable hardware-specific behavior). The glitch comes from the /dev/rtcX logic implementing the legacy RTC_ALM_SET (limited to 24 hours, needing RTC_AIE_ON) ioctl on top of the RTC driver call providing access to the newer RTC_WKALM_SET (without those limitations) by initializing the day/month/year fields to be invalid ... that second mode. Now, since few RTC drivers check those fields, and most hardware misbehaves when faced with invalid date fields, many RTC drivers will set bogus alarm times on those RTC_ALM_SET code paths. (Several in-tree drivers have that issue, and I also noticed it with code reviews on several new RTC drivers.) This patch ensures that RTC drivers never see such invalid alarm fields, by moving some logic out of rtc-omap into the RTC_ALM_SET code and adding an explicit check (which will prevent the issue on other code paths). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Scott Wood <scottwood@freescale.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* revert "rtc: Add rtc_merge_alarm()"Andrew Morton2007-05-08
| | | | | | | | | | | | | David says "884b4aaaa242a2db8c8252796f0118164a680ab5 should be reverted. It added an rtc_merge_alarm() call to the 2.6.20 kernel, which hasn't yet been used by any in-tree driver; this patch obviates the need for that call, and uses a more robust approach." Cc: Scott Wood <scottwood@freescale.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* workaround rtc-related acpi table bugsDavid Brownell2007-05-08
| | | | | | | | | | | | | | | | This works around a bug seen in some RTC-related ACPI table entries, and tweaks related diagnostics to follow the ACPI convention. The bug prevents misleading boot-time messages: platforms affected by this bug wrongly report they can support alarms up to one year in the future, when in fact the longest alarm is just 24 hours. That will surprise anyone trying to use those extended alarms. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ACPI wakeup hooks for rtc-cmosDavid Brownell2007-05-08
| | | | | | | | | | | Remove /proc/acpi/alarm file when the rtc-cmos "wakealarm" file is available. Instead, provide hooks that rtc-cmos will use. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-cmos wakeup interfaceDavid Brownell2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I finally got around to testing the updated wakeup event hooks for rtc-cmos, and they follow in two patches: - Interface update ... when a simple enable_irq_wake() doesn't suffice, the platform data can hold suspend/resume callback hooks. - ACPI implementation ... provides callback hooks to do ACPI magic, and eliminate the legacy /proc/acpi/alarm file. The interface update could go into 2.6.21, but that's not essential; they will be NOPs on most PCs, without the ACPI stuff. I suspect the ACPI folk may have opinions about how to merge that second patch, and how to obsolete that legacy procfs file. I'd like to see that merge into 2.6.22 if possible... As for how to kick it in ... two ways: - The appended "rtcwake" program; updated since the last time it was posted, it deals much better with timezones and DST. - Write the /sys/class/rtc/.../wakealarm file, then go to sleep. For some reason RTC wake from "swsusp" stopped working on a system where it previously worked; the alarm setting appears to get clobbered. But on the bright side, RTC wake from "standby" worked on a system that had never been able to resume from that state before ... IDEACPI is my guess as to why it finally started to work. It's the old "two steps forward, one step back" dance, I guess. - Dave /* gcc -Wall -Os -o rtcwake rtcwake.c */ #include <stdio.h> #include <getopt.h> #include <fcntl.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <time.h> #include <sys/ioctl.h> #include <sys/time.h> #include <sys/types.h> #include <linux/rtc.h> /* constants from legacy PC/AT hardware */ #define RTC_PF 0x40 #define RTC_AF 0x20 #define RTC_UF 0x10 /* * rtcwake -- enter a system sleep state until specified wakeup time. * * This uses cross-platform Linux interfaces to enter a system sleep state, * and leave it no later than a specified time. It uses any RTC framework * driver that supports standard driver model wakeup flags. * * This is normally used like the old "apmsleep" utility, to wake from a * suspend state like ACPI S1 (standby) or S3 (suspend-to-RAM). Most * platforms can implement those without analogues of BIOS, APM, or ACPI. * * On some systems, this can also be used like "nvram-wakeup", waking * from states like ACPI S4 (suspend to disk). Not all systems have * persistent media that are appropriate for such suspend modes. * * The best way to set the system's RTC is so that it holds the current * time in UTC. Use the "-l" flag to tell this program that the system * RTC uses a local timezone instead (maybe you dual-boot MS-Windows). */ static char *progname; #ifdef DEBUG #define VERSION "1.0 dev (" __DATE__ " " __TIME__ ")" #else #define VERSION "0.9" #endif static unsigned verbose; static int rtc_is_utc = -1; static int may_wakeup(const char *devname) { char buf[128], *s; FILE *f; snprintf(buf, sizeof buf, "/sys/class/rtc/%s/device/power/wakeup", devname); f = fopen(buf, "r"); if (!f) { perror(buf); return 0; } fgets(buf, sizeof buf, f); fclose(f); s = strchr(buf, '\n'); if (!s) return 0; *s = 0; /* wakeup events could be disabled or not supported */ return strcmp(buf, "enabled") == 0; } /* all times should be in UTC */ static time_t sys_time; static time_t rtc_time; static int get_basetimes(int fd) { struct tm tm; struct rtc_time rtc; /* this process works in RTC time, except when working * with the system clock (which always uses UTC). */ if (rtc_is_utc) setenv("TZ", "UTC", 1); tzset(); /* read rtc and system clocks "at the same time", or as * precisely (+/- a second) as we can read them. */ if (ioctl(fd, RTC_RD_TIME, &rtc) < 0) { perror("read rtc time"); return 0; } sys_time = time(0); if (sys_time == (time_t)-1) { perror("read system time"); return 0; } /* convert rtc_time to normal arithmetic-friendly form, * updating tm.tm_wday as used by asctime(). */ memset(&tm, 0, sizeof tm); tm.tm_sec = rtc.tm_sec; tm.tm_min = rtc.tm_min; tm.tm_hour = rtc.tm_hour; tm.tm_mday = rtc.tm_mday; tm.tm_mon = rtc.tm_mon; tm.tm_year = rtc.tm_year; tm.tm_isdst = rtc.tm_isdst; /* stays unspecified? */ rtc_time = mktime(&tm); if (rtc_time == (time_t)-1) { perror("convert rtc time"); return 0; } if (verbose) { if (!rtc_is_utc) { printf("\ttzone = %ld\n", timezone); printf("\ttzname = %s\n", tzname[daylight]); gmtime_r(&rtc_time, &tm); } printf("\tsystime = %ld, (UTC) %s", (long) sys_time, asctime(gmtime(&sys_time))); printf("\trtctime = %ld, (UTC) %s", (long) rtc_time, asctime(&tm)); } return 1; } static int setup_alarm(int fd, time_t *wakeup) { struct tm *tm; struct rtc_wkalrm wake; tm = gmtime(wakeup); wake.time.tm_sec = tm->tm_sec; wake.time.tm_min = tm->tm_min; wake.time.tm_hour = tm->tm_hour; wake.time.tm_mday = tm->tm_mday; wake.time.tm_mon = tm->tm_mon; wake.time.tm_year = tm->tm_year; wake.time.tm_wday = tm->tm_wday; wake.time.tm_yday = tm->tm_yday; wake.time.tm_isdst = tm->tm_isdst; /* many rtc alarms only support up to 24 hours from 'now' ... */ if ((rtc_time + (24 * 60 * 60)) > *wakeup) { if (ioctl(fd, RTC_ALM_SET, &wake.time) < 0) { perror("set rtc alarm"); return 0; } if (ioctl(fd, RTC_AIE_ON, 0) < 0) { perror("enable rtc alarm"); return 0; } /* ... so use the "more than 24 hours" request only if we must */ } else { /* avoid an extra AIE_ON call */ wake.enabled = 1; if (ioctl(fd, RTC_WKALM_SET, &wake) < 0) { perror("set rtc wake alarm"); return 0; } } return 1; } static void suspend_system(const char *suspend) { FILE *f = fopen("/sys/power/state", "w"); if (!f) { perror("/sys/power/state"); return; } fprintf(f, "%s\n", suspend); fflush(f); /* this executes after wake from suspend */ fclose(f); } int main(int argc, char **argv) { static char *devname = "rtc0"; static unsigned seconds = 0; static char *suspend = "standby"; int t; int fd; time_t alarm = 0; progname = strrchr(argv[0], '/'); if (progname) progname++; else progname = argv[0]; if (chdir("/dev/") < 0) { perror("chdir /dev"); return 1; } while ((t = getopt(argc, argv, "d:lm:s:t:uVv")) != EOF) { switch (t) { case 'd': devname = optarg; break; case 'l': rtc_is_utc = 0; break; /* what system power mode to use? for now handle only * standardized mode names; eventually when systems define * their own state names, parse /sys/power/state. * * "on" is used just to test the RTC alarm mechanism, * bypassing all the wakeup-from-sleep infrastructure. */ case 'm': if (strcmp(optarg, "standby") == 0 || strcmp(optarg, "mem") == 0 || strcmp(optarg, "disk") == 0 || strcmp(optarg, "on") == 0 ) { suspend = optarg; break; } printf("%s: unrecognized suspend state '%s'\n", progname, optarg); goto usage; /* alarm time, seconds-to-sleep (relative) */ case 's': t = atoi(optarg); if (t < 0) { printf("%s: illegal interval %s seconds\n", progname, optarg); goto usage; } seconds = t; break; /* alarm time, time_t (absolute, seconds since 1/1 1970 UTC) */ case 't': t = atoi(optarg); if (t < 0) { printf("%s: illegal time_t value %s\n", progname, optarg); goto usage; } alarm = t; break; case 'u': rtc_is_utc = 1; break; case 'v': verbose++; break; case 'V': printf("%s: version %s\n", progname, VERSION); break; default: usage: printf("usage: %s [options]" "\n\t" "-d rtc0|rtc1|...\t(select rtc)" "\n\t" "-l\t\t\t(RTC uses local timezone)" "\n\t" "-m standby|mem|...\t(sleep mode)" "\n\t" "-s seconds\t\t(seconds to sleep)" "\n\t" "-t time_t\t\t(time to wake)" "\n\t" "-u\t\t\t(RTC uses UTC)" "\n\t" "-v\t\t\t(verbose messages)" "\n\t" "-V\t\t\t(show version)" "\n", progname); return 1; } } if (!alarm && !seconds) { printf("%s: must provide wake time\n", progname); goto usage; } /* REVISIT: if /etc/adjtime exists, read it to see what * the util-linux version of hwclock assumes. */ if (rtc_is_utc == -1) { printf("%s: assuming RTC uses UTC ...\n", progname); rtc_is_utc = 1; } /* this RTC must exist and (if we'll sleep) be wakeup-enabled */ fd = open(devname, O_RDONLY); if (fd < 0) { perror(devname); return 1; } if (strcmp(suspend, "on") != 0 && !may_wakeup(devname)) { printf("%s: %s not enabled for wakeup events\n", progname, devname); return 1; } /* relative or absolute alarm time, normalized to time_t */ if (!get_basetimes(fd)) return 1; if (verbose) printf("alarm %ld, sys_time %ld, rtc_time %ld, seconds %u\n", alarm, sys_time, rtc_time, seconds); if (alarm) { if (alarm < sys_time) { printf("%s: time doesn't go backward to %s", progname, ctime(&alarm)); return 1; } alarm += sys_time - rtc_time; } else alarm = rtc_time + seconds + 1; if (setup_alarm(fd, &alarm) < 0) return 1; sync(); printf("%s: wakeup from \"%s\" using %s at %s", progname, suspend, devname, ctime(&alarm)); fflush(stdout); usleep(10 * 1000); if (strcmp(suspend, "on") != 0) suspend_system(suspend); else { unsigned long data; do { t = read(fd, &data, sizeof data); if (t < 0) { perror("rtc read"); break; } if (verbose) printf("... %s: %03lx\n", devname, data); } while (!(data & RTC_AF)); } if (ioctl(fd, RTC_AIE_OFF, 0) < 0) perror("disable rtc alarm interrupt"); close(fd); return 0; } This patch: Make rtc-cmos do the relevant magic so this RTC can wake the system from a sleep state. That magic comes in two basic flavors: - Straightforward: enable_irq_wake(), the way it'd work on most SOC chips; or generally with system sleep states which don't disable core IRQ logic. - Roundabout, using non-IRQ platform hooks. This is needed with ACPI and one almost-clone chip which uses a special wakeup-only alarm. (That's the RTC used on Footbridge boards, FWIW, which don't do PM in Linux.) A separate patch implements those hooks for ACPI platforms, so that rtc_cmos can issue system wakeup events (and its sysfs "wakealarm" attribute works on at least some systems). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: update vr41xx alarm handlingYoichi Yuasa2007-05-08
| | | | | | | | | | | - vr41xx_rtc_read_alarm() reports alarm enabled. - vr41xx_rtc_set_alarm() sets alarm disable/enable by rtc_wkalrm.enabled. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* RTC Kconfig cleanupAlessandro Zummo2007-05-08
| | | | | | | Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: update to class device removal patchesDavid Brownell2007-05-08
| | | | | | | | | | | | Fix a goof in the revised classdev support for RTCs: make sure the /dev node info is ready before the device is registered, not after. Otherwise the /sys/class/rtc/rtcN/dev attribute won't be created and then udev won't have the information it needs to create the /dev/rtcN node. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* RTC: replace some newly-introduced macros with inlinesDavid Brownell2007-05-08
| | | | | | Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: suspend()/resume() restores system clockDavid Brownell2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | RTC class suspend/resume support, re-initializing the system clock on resume from the clock used to initialize it at boot time. - The reinit-on-resume is hooked to the existing RTC_HCTOSYS config option, on the grounds that a clock good enough for init must also be good enough for re-init. - Inlining a version of the code used by ARM, to save and restore the delta between a selected RTC and the current system wall-clock time. - Removes calls to that ARM code from AT91, OMAP1, and S3C RTCs. This means that systems using those RTCs across suspend/resume will likely want to change their kernel configs to enable RTC_HCTOSYS. If HCTOSYS isn't using a second RTC (with battery?), this changes the system's initial date from Jan 1970 to the epoch this hardware uses: 1998 for AT91, 2000 for OMAP1 (assuming no split power mode), etc. This goes on top of the patch series removing "struct class_device" usage from the RTC framework. That's all needed for class suspend()/resume(). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-By: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: remove rest of class_deviceDavid Brownell2007-05-08
| | | | | | | | | | Finish converting the RTC framework so it no longer uses class_device. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-By: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: simplified /proc/driver/rtc handlingDavid Brownell2007-05-08
| | | | | | | | | | | | | | | | | This simplifies the RTC procfs support by removing the class_interface that hooks it into the rtc core. If it's configured, then sysfs support is now part of the RTC core, and is never a separate module. It also removes the class_interface hook, now that its last remaining user is gone. (That API is usable only with a "struct class_device".) It's another step towards being able to remove "struct class_device". Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-By: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: simplified rtc sysfs attribute handlingDavid Brownell2007-05-08
| | | | | | | | | | | | | | This simplifies the RTC sysfs support by removing the class_interface that hooks it into the rtc core. If it's configured, then sysfs support is now part of the RTC core, and is never a separate module. It's another step towards being able to remove "struct class_device". Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-By: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: rtc interfaces don't use class_deviceDavid Brownell2007-05-08
| | | | | | | | | | | | This patch removes class_device from the programming interface that the RTC framework exposes to the rest of the kernel. Now an rtc_device is passed, which is more type-safe and streamlines all the relevant code. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-By: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: remove /sys/class/rtc-dev/*David Brownell2007-05-08
| | | | | | | | | | | | | | | | | This simplifies the /dev support by removing a superfluous class_device (the /sys/class/rtc-dev stuff) and the class_interface that hooks it into the rtc core. Accordingly, if it's configured then /dev support is now part of the RTC core, and is never a separate module. It's another step towards being able to remove "struct class_device". [bunk@stusta.de: drivers/rtc/rtc-dev.c should #include "rtc-core.h"] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-By: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ISDN: Spinlock initializer cleanupThomas Gleixner2007-05-08
| | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* use mutex instead of semaphore in CAPI 2.0 interfaceMatthias Kaehlcke2007-05-08
| | | | | | | | | | The CAPI 2.0 interface uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fix spinlock usage in hysdn_log_close()Matthias Kaehlcke2007-05-08
| | | | | | | | | | | | Fix incorrect spinlock use in hysdn_log_close(). The function declared a spinlock on the stack and used it to 'protect' a shared driver structure. The patch simply removes the useless code. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/isdn/hardware/eicon/: remove unused header filesArmin Schindler2007-05-08
| | | | | | | | | | As pointed out by Robert P. J. Day, here is a patch to remove unused header files from Eicon/Dialogic ISDN driver. Signed-off-by: Armin Schindler <armin@melware.de> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* make drivers/isdn/capi/capiutil.c:cdebbuf_alloc() staticAdrian Bunk2007-05-08
| | | | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* inode numbering: change libfs sb creation routines to avoid collisions with ↵Jeff Layton2007-05-08
| | | | | | | | | | | | | | | | | | | their root inodes This patch makes it so that simple_fill_super and get_sb_pseudo assign their root inodes to be number 1. It also fixes up a couple of callers of simple_fill_super that were passing in files arrays that had an index at number 1, and adds a warning for any caller that sends in such an array. It would have been nice to have made it so that it wasn't possible to make such a collision, but some callers need to be able to control what inode number their entries get, so I think this is the best that can be done. Signed-off-by: Jeff Layton <jlayton@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* au1550 SPI controller driverJan Nikitenko2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is a driver for the Alchemy au1550 PSC (Programmable Serial Controller) in SPI master mode. It supports dma transfers using the Alchemy descriptor based dma controller for 4-8 bits per word SPI transfers. For 9-24 bits per word transfers, pio irq based mode is used to avoid setup of dma channels from scratch on each number of bits per word change. Tested with au1550; this may also work on other MIPS Alchemy cpus, like au1200/au1210/au1250. Used extensively with SD card connected via SPI; this handles 8.1MHz SPI clock transfers using dma without any problem (the highest SPI clock freq possible with au1550 running on 324MHz). The driver supports sharing of SPI bus by multiple devices. All features of Alchemy SPI mode are supported (all SPI modes, msb/lsb first, bits per word in 4-24 range). As the SPI clock of the controller depends on main input clock that shall be configured externally, platform data structure for au1550 SPI controller driver contains mainclk_hz attribute to define the input clock rate. From this value, dividers of the controller for SPI clock are set up for required frequency. Signed-off-by: Jan Nikitenko <jan.nikitenko@gmail.com> Whitespace and section fixups. Remove partial workaround for platform setup bug in dma_mask setup; it couldn't work with multiple controllers. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SPI kerneldocDavid Brownell2007-05-08
| | | | | | | | | | | | | | Various documentation updates for the SPI infrastructure, to clarify things that may not have been clear, to cope with lack of editing, and fix omissions. Also, plug SPI into the kernel-api DocBook template, and fix all the resulting glitches in document generation. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* /dev/spidevB.C interfaceAndrea Paterniani2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | Add a filesystem API for <linux/spi/spi.h> stack. The initial version of this interface is purely synchronous. dbrownell@users.sourceforge.net: Cleaned up, bugfixed; much simplified; added preliminary documentation. Works with mdev given CONFIG_SYSFS_DEPRECATED; and presumably udev. Updated SPI_IOC_MESSAGE ioctl to full spi_message semantics, supporting groups of one or more transfers (each of which may be full duplex if desired). This is marked as EXPERIMENTAL with an explicit disclaimer that the API (notably the ioctls) is subject to change. Signed-off-by: Andrea Paterniani <a.paterniani@swapp-eng.it> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* minor spi_butterfly cleanupDavid Brownell2007-05-08
| | | | | | | | | | Simplify the spi_butterfly driver by removing incomplete/unused support for the second SPI bus, implemented by the USI controller. This should make this a clearer example of how to write a parport bitbang driver. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 8250: Remove commented out irq cruftJosh Boyer2007-05-08
| | | | | | | | | Remove some obviously old interrupt disable/enable code that has been commented out. Signed-off-by: Josh Boyer <jwboyer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* use mutex instead of semaphore for misc char devicesMatthias Kaehlcke2007-05-08
| | | | | | | | | The misc character device driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* use mutex instead of semaphore in hdaps driverMatthias Kaehlcke2007-05-08
| | | | | | | | | | The hdaps driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Cc: Robert Love <rlove@rlove.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* use mutex instead of semaphore in TPM driverMatthias Kaehlcke2007-05-08
| | | | | | | | | | | The TPM driver uses two semaphores as mutexes. Use the mutex API instead of the (binary) semaphores. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Cc: Kylene Hall <kjhall@us.ibm.com> Cc: Marcel Selhorst <tpm@selhorst.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* use mutex instead of semaphore in RocketPort driverMatthias Kaehlcke2007-05-08
| | | | | | | | | The RocketPort driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* synclink_gt use dynamic tty device registrationPaul Fulghum2007-05-08
| | | | | | | | Change synclink_gt driver to use dynamic tty device registration. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Misc: add sensable phantom driverJiri Slaby2007-05-08
| | | | | | | | Add sensable phantom driver Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* old buffer overflow in moxa driverdann frazier2007-05-08
| | | | | | | | | | | | | | | | | I noticed that the moxa input checking security bug described by CVE-2005-0504 appears to remain unfixed upstream. The issue is described here: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0504 Debian has been shipping the following patch from Andres Salomon. (akpm: it's a privileged operation) Signed-off-by: dann frazier <dannf@hp.com> Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Driver for the Maxim DS1WM, a 1-wire bus master ASIC coreakpm@linux-foundation.org2007-05-08
| | | | | | | | | | Cc: Matt Reimer <mreimer@vpop.net> [akpm@linux-foundation.org: kconfig update] Signed-off-by: Matt Reimer <mreimer@vpop.net> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: allow bus master to have reset and byte opsEvgeniy Polyakov2007-05-08
| | | | | | | Signed-off-by: Matt Reimer <mreimer@vpop.net> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* W1 printk format warning fixEvgeniy Polyakov2007-05-08
| | | | | Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tpm: fix sleep-in-spinlockParag Warudkar2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | flush_scheduled_work() can sleep, and we're calling it under spinlock. AFAICS, moving flush_scheduled_work before spin_lock() should not cause any problems. Reason being - The only thing that can race against tpm_release is tpm_open (tpm_release is called when last reference to the file is closed and only thing that can happen after that is tpm_open??) and tpm_open acquires driver_lock and more over it bails out with EBUSY if chip->num_opens is greater than 0. I also moved chip->num_pending-- to after deleting timer and setting data pending as it looks more correct for the paranoid although it probably doesn't matter as it is guarded by driver_lock. None the less this change should not cause problems. While I was at it I noticed a missing NULL check in tpm_register_hardware which is fixed with this patch as well. Signed-off-by: Parag Warudkar <parag.warudkar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/char: use __set_current_state()Milind Arun Choudhary2007-05-08
| | | | | | | | | use __set_current_state(TASK_*) instead of current->state = TASK_*, Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Clean up mutex_trylock noiseJean Delvare2007-05-08
| | | | | | | | | | | | Ingo Molnar's semaphore to mutex conversions left some noise on a few trylock calls. Clean it up. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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