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The LITMUS^RT kernel.

Bjoern Brandenburg

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path: root/drivers/rtc/rtc-at91sam9.c

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author	David Brownell <dbrownell@users.sourceforge.net>	2008-06-12 18:21:55 -0400
committer	Linus Torvalds <torvalds@linux-foundation.org>	2008-06-12 21:05:42 -0400
commit	e6d2bb2bacb43ff03b0f458108d71981d58e775a (patch)
tree	a6a50e2f3a0150dafcf55aa458b69c4359cdf4f8 /drivers/rtc/rtc-at91sam9.c
parent	1da2e3d679a8ea2d9e82040359a706da0bd3bef6 (diff)

rtc: make HPET_RTC_IRQ track HPET_EMULATE_RTC

More Kconfig tweaks related to the legacy PC RTC code: - Describe the legacy PC RTC driver as such ... it's never quite been clear that this driver is for PC RTCs, and now it's fair to call this the "legacy" driver. - Force it to understand about HPET stealing its IRQs ... kernel code does this always when HPET is in use, there should be no option for users to goof up the config. This seems to fix kernel bugzilla #10729. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Diffstat (limited to 'drivers/rtc/rtc-at91sam9.c')

0 files changed, 0 insertions, 0 deletions

t">*dev, struct device_attribute *attr, const char *buf, size_t count) { int rc; char *name; name = kstrndup(buf, count, GFP_KERNEL); if (!name) return -ENOSPC; pr_info("loading '%s'\n", name); mutex_lock(&test_fw_mutex); release_firmware(test_firmware); test_firmware = NULL; rc = request_firmware(&test_firmware, name, dev); if (rc) { pr_info("load of '%s' failed: %d\n", name, rc); goto out; } pr_info("loaded: %zu\n", test_firmware->size); rc = count; out: mutex_unlock(&test_fw_mutex); kfree(name); return rc; } static DEVICE_ATTR_WO(trigger_request); static DECLARE_COMPLETION(async_fw_done); static void trigger_async_request_cb(const struct firmware *fw, void *context) { test_firmware = fw; complete(&async_fw_done); } static ssize_t trigger_async_request_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int rc; char *name; name = kstrndup(buf, count, GFP_KERNEL); if (!name) return -ENOSPC; pr_info("loading '%s'\n", name); mutex_lock(&test_fw_mutex); release_firmware(test_firmware); test_firmware = NULL; rc = request_firmware_nowait(THIS_MODULE, 1, name, dev, GFP_KERNEL, NULL, trigger_async_request_cb); if (rc) { pr_info("async load of '%s' failed: %d\n", name, rc); kfree(name); goto out; } /* Free 'name' ASAP, to test for race conditions */ kfree(name); wait_for_completion(&async_fw_done); if (test_firmware) { pr_info("loaded: %zu\n", test_firmware->size); rc = count; } else { pr_err("failed to async load firmware\n"); rc = -ENODEV; } out: mutex_unlock(&test_fw_mutex); return rc; } static DEVICE_ATTR_WO(trigger_async_request); static int __init test_firmware_init(void) { int rc; rc = misc_register(&test_fw_misc_device); if (rc) { pr_err("could not register misc device: %d\n", rc); return rc; } rc = device_create_file(test_fw_misc_device.this_device, &dev_attr_trigger_request); if (rc) { pr_err("could not create sysfs interface: %d\n", rc); goto dereg; } rc = device_create_file(test_fw_misc_device.this_device, &dev_attr_trigger_async_request); if (rc) { pr_err("could not create async sysfs interface: %d\n", rc); goto remove_file; } pr_warn("interface ready\n"); return 0; remove_file: device_remove_file(test_fw_misc_device.this_device, &dev_attr_trigger_async_request); dereg: misc_deregister(&test_fw_misc_device); return rc; } module_init(test_firmware_init); static void __exit test_firmware_exit(void) { release_firmware(test_firmware); device_remove_file(test_fw_misc_device.this_device, &dev_attr_trigger_async_request); device_remove_file(test_fw_misc_device.this_device, &dev_attr_trigger_request); misc_deregister(&test_fw_misc_device); pr_warn("removed interface\n"); } module_exit(test_firmware_exit); MODULE_AUTHOR("Kees Cook <keescook@chromium.org>"); MODULE_LICENSE("GPL");