Merge tag 'fixes-3.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

These are the bug fixes that have accumulated since 3.3-rc3 in arm-soc.
The majority of them are regression fixes for stuff that broke during
the merge 3.3 window.

The notable ones are:

* The at91 ata drivers both broke because of an earlier cleanup patch that
  some other patches were based on. Jean-Christophe decided to remove
  the legacy at91_ide driver and fix the new-style at91-pata driver while
  keeping the cleanup patch. I almost rejected the patches for being too
  late and too big but in the end decided to accept them because they
  fix a regression.

* A patch fixing build breakage from the sysdev-to-device conversion
  colliding with other changes touches a number of mach-s3c files.

* b0654037 "ARM: orion: Fix Orion5x GPIO regression from MPP cleanup"
  is a mechanical change that unfortunately touches a lot of lines
  that should up in the diffstat.

* tag 'fixes-3.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
  ARM: at91: drop ide driver in favor of the pata one
  pata/at91: use newly introduced SMC accessors
  ARM: at91: add accessor to manage SMC
  ARM: at91:rtc/rtc-at91sam9: ioremap register bank
  ARM: at91: USB AT91 gadget registration for module
  ep93xx: fix build of vision_ep93xx.c
  ARM: OMAP2xxx: PM: fix OMAP2xxx-specific UART idle bug in v3.3
  ARM: orion: Fix USB phy for orion5x.
  ARM: orion: Fix Orion5x GPIO regression from MPP cleanup
  ARM: EXYNOS: Add cpu-offset property in gic device tree node
  ARM: EXYNOS: Bring exynos4-dt up to date
  ARM: OMAP3: cm-t35: fix section mismatch warning
  ARM: OMAP2: Fix the OMAP2 only build break seen with 2011+ ARM tool-chains
  ARM: tegra: paz00: fix wrong UART port on mini-pcie plug
  ARM: tegra: paz00: fix wrong SD1 power gpio
  i2c: tegra: Add devexit_p() for remove
  ARM: EXYNOS: Correct M-5MOLS sensor clock frequency on Universal C210 board
  ARM: EXYNOS: Correct framebuffer window size on Nuri board
  ARM: SAMSUNG: Fix missing api-change from subsys_interface change
  ARM: EXYNOS: Fix "warning: initialization from incompatible pointer type"
  ...

5 files changed, 32 insertions, 398 deletions

diff --git a/drivers/ata/pata_at91.c b/drivers/ata/pata_at91.c
index a7d91a72ee35..53d3770a0b1b 100644
--- a/drivers/ata/pata_at91.c
+++ b/drivers/ata/pata_at91.c
@@ -207,11 +207,11 @@ static void set_smc_timing(struct device *dev, struct ata_device *adev,
 {
         int ret = 0;
         int use_iordy;
+        struct sam9_smc_config smc;
         unsigned int t6z;         /* data tristate time in ns */
         unsigned int cycle;       /* SMC Cycle width in MCK ticks */
         unsigned int setup;       /* SMC Setup width in MCK ticks */
         unsigned int pulse;       /* CFIOR and CFIOW pulse width in MCK ticks */
-        unsigned int cs_setup = 0;/* CS4 or CS5 setup width in MCK ticks */
         unsigned int cs_pulse;    /* CS4 or CS5 pulse width in MCK ticks*/
         unsigned int tdf_cycles;  /* SMC TDF MCK ticks */
         unsigned long mck_hz;     /* MCK frequency in Hz */
@@ -244,26 +244,20 @@ static void set_smc_timing(struct device *dev, struct ata_device *adev,
         }
 
         dev_dbg(dev, "Use IORDY=%u, TDF Cycles=%u\n", use_iordy, tdf_cycles);
-        info->mode |= AT91_SMC_TDF_(tdf_cycles);
-
-        /* write SMC Setup Register */
-        at91_sys_write(AT91_SMC_SETUP(info->cs),
-                        AT91_SMC_NWESETUP_(setup) |
-                        AT91_SMC_NRDSETUP_(setup) |
-                        AT91_SMC_NCS_WRSETUP_(cs_setup) |
-                        AT91_SMC_NCS_RDSETUP_(cs_setup));
-        /* write SMC Pulse Register */
-        at91_sys_write(AT91_SMC_PULSE(info->cs),
-                        AT91_SMC_NWEPULSE_(pulse) |
-                        AT91_SMC_NRDPULSE_(pulse) |
-                        AT91_SMC_NCS_WRPULSE_(cs_pulse) |
-                        AT91_SMC_NCS_RDPULSE_(cs_pulse));
-        /* write SMC Cycle Register */
-        at91_sys_write(AT91_SMC_CYCLE(info->cs),
-                        AT91_SMC_NWECYCLE_(cycle) |
-                        AT91_SMC_NRDCYCLE_(cycle));
-        /* write SMC Mode Register*/
-        at91_sys_write(AT91_SMC_MODE(info->cs), info->mode);
+
+        /* SMC Setup Register */
+        smc.nwe_setup = smc.nrd_setup = setup;
+        smc.ncs_write_setup = smc.ncs_read_setup = 0;
+        /* SMC Pulse Register */
+        smc.nwe_pulse = smc.nrd_pulse = pulse;
+        smc.ncs_write_pulse = smc.ncs_read_pulse = cs_pulse;
+        /* SMC Cycle Register */
+        smc.write_cycle = smc.read_cycle = cycle;
+        /* SMC Mode Register*/
+        smc.tdf_cycles = tdf_cycles;
+        smc.mode = info->mode;
+
+        sam9_smc_configure(0, info->cs, &smc);
 }
 
 static void pata_at91_set_piomode(struct ata_port *ap, struct ata_device *adev)
@@ -288,20 +282,20 @@ static unsigned int pata_at91_data_xfer_noirq(struct ata_device *dev,
         struct at91_ide_info *info = dev->link->ap->host->private_data;
         unsigned int consumed;
         unsigned long flags;
-        unsigned int mode;
+        struct sam9_smc_config smc;
 
         local_irq_save(flags);
-        mode = at91_sys_read(AT91_SMC_MODE(info->cs));
+        sam9_smc_read_mode(0, info->cs, &smc);
 
         /* set 16bit mode before writing data */
-        at91_sys_write(AT91_SMC_MODE(info->cs),
-                        (mode & ~AT91_SMC_DBW) | AT91_SMC_DBW_16);
+        smc.mode = (smc.mode & ~AT91_SMC_DBW) | AT91_SMC_DBW_16;
+        sam9_smc_write_mode(0, info->cs, &smc);
 
         consumed = ata_sff_data_xfer(dev, buf, buflen, rw);
 
         /* restore 8bit mode after data is written */
-        at91_sys_write(AT91_SMC_MODE(info->cs),
-                        (mode & ~AT91_SMC_DBW) | AT91_SMC_DBW_8);
+        smc.mode = (smc.mode & ~AT91_SMC_DBW) | AT91_SMC_DBW_8;
+        sam9_smc_write_mode(0, info->cs, &smc);
 
         local_irq_restore(flags);
         return consumed;
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 6381604696d3..0ab4a9548745 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -755,7 +755,7 @@ MODULE_DEVICE_TABLE(of, tegra_i2c_of_match);
 
 static struct platform_driver tegra_i2c_driver = {
         .probe   = tegra_i2c_probe,
-        .remove  = tegra_i2c_remove,
+        .remove  = __devexit_p(tegra_i2c_remove),
 #ifdef CONFIG_PM
         .suspend = tegra_i2c_suspend,
         .resume  = tegra_i2c_resume,
diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index 7f879b2397b0..af8d016c37ea 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -116,4 +116,3 @@ obj-$(CONFIG_BLK_DEV_IDE_AU1XXX)	+= au1xxx-ide.o
 
 obj-$(CONFIG_BLK_DEV_IDE_TX4938)        += tx4938ide.o
 obj-$(CONFIG_BLK_DEV_IDE_TX4939)        += tx4939ide.o
-obj-$(CONFIG_BLK_DEV_IDE_AT91)          += at91_ide.o
diff --git a/drivers/ide/at91_ide.c b/drivers/ide/at91_ide.c
deleted file mode 100644
index 41d415529479..000000000000
--- a/drivers/ide/at91_ide.c
+++ /dev/null
@@ -1,366 +0,0 @@
-/*
- * IDE host driver for AT91 (SAM9, CAP9, AT572D940HF) Static Memory Controller
- * with Compact Flash True IDE logic
- *
- * Copyright (c) 2008, 2009 Kelvatek Ltd.
- *
- *  This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/ide.h>
-#include <linux/platform_device.h>
-
-#include <mach/board.h>
-#include <asm/gpio.h>
-#include <mach/at91sam9_smc.h>
-
-#define DRV_NAME "at91_ide"
-
-#define perr(fmt, args...) pr_err(DRV_NAME ": " fmt, ##args)
-#define pdbg(fmt, args...) pr_debug("%s " fmt, __func__, ##args)
-
-/*
- * Access to IDE device is possible through EBI Static Memory Controller
- * with Compact Flash logic. For details see EBI and SMC datasheet sections
- * of any microcontroller from AT91SAM9 family.
- *
- * Within SMC chip select address space, lines A[23:21] distinguish Compact
- * Flash modes (I/O, common memory, attribute memory, True IDE). IDE modes are:
- *   0x00c0000 - True IDE
- *   0x00e0000 - Alternate True IDE (Alt Status Register)
- *
- * On True IDE mode Task File and Data Register are mapped at the same address.
- * To distinguish access between these two different bus data width is used:
- * 8Bit for Task File, 16Bit for Data I/O.
- *
- * After initialization we do 8/16 bit flipping (changes in SMC MODE register)
- * only inside IDE callback routines which are serialized by IDE layer,
- * so no additional locking needed.
- */
-
-#define TASK_FILE       0x00c00000
-#define ALT_MODE        0x00e00000
-#define REGS_SIZE       8
-
-#define enter_16bit(cs, mode) do {                                      \
-        mode = at91_sys_read(AT91_SMC_MODE(cs));                        \
-        at91_sys_write(AT91_SMC_MODE(cs), mode | AT91_SMC_DBW_16);      \
-} while (0)
-
-#define leave_16bit(cs, mode) at91_sys_write(AT91_SMC_MODE(cs), mode);
-
-static void set_smc_timings(const u8 chipselect, const u16 cycle,
-                            const u16 setup, const u16 pulse,
-                            const u16 data_float, int use_iordy)
-{
-        unsigned long mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
-                             AT91_SMC_BAT_SELECT;
-
-        /* disable or enable waiting for IORDY signal */
-        if (use_iordy)
-                mode |= AT91_SMC_EXNWMODE_READY;
-
-        /* add data float cycles if needed */
-        if (data_float)
-                mode |= AT91_SMC_TDF_(data_float);
-
-        at91_sys_write(AT91_SMC_MODE(chipselect), mode);
-
-        /* setup timings in SMC */
-        at91_sys_write(AT91_SMC_SETUP(chipselect), AT91_SMC_NWESETUP_(setup) |
-                                                   AT91_SMC_NCS_WRSETUP_(0) |
-                                                   AT91_SMC_NRDSETUP_(setup) |
-                                                   AT91_SMC_NCS_RDSETUP_(0));
-        at91_sys_write(AT91_SMC_PULSE(chipselect), AT91_SMC_NWEPULSE_(pulse) |
-                                                   AT91_SMC_NCS_WRPULSE_(cycle) |
-                                                   AT91_SMC_NRDPULSE_(pulse) |
-                                                   AT91_SMC_NCS_RDPULSE_(cycle));
-        at91_sys_write(AT91_SMC_CYCLE(chipselect), AT91_SMC_NWECYCLE_(cycle) |
-                                                   AT91_SMC_NRDCYCLE_(cycle));
-}
-
-static unsigned int calc_mck_cycles(unsigned int ns, unsigned int mck_hz)
-{
-        u64 tmp = ns;
-
-        tmp *= mck_hz;
-        tmp += 1000*1000*1000 - 1; /* round up */
-        do_div(tmp, 1000*1000*1000);
-        return (unsigned int) tmp;
-}
-
-static void apply_timings(const u8 chipselect, const u8 pio,
-                          const struct ide_timing *timing, int use_iordy)
-{
-        unsigned int t0, t1, t2, t6z;
-        unsigned int cycle, setup, pulse, data_float;
-        unsigned int mck_hz;
-        struct clk *mck;
-
-        /* see table 22 of Compact Flash standard 4.1 for the meaning,
-         * we do not stretch active (t2) time, so setup (t1) + hold time (th)
-         * assure at least minimal recovery (t2i) time */
-        t0 = timing->cyc8b;
-        t1 = timing->setup;
-        t2 = timing->act8b;
-        t6z = (pio < 5) ? 30 : 20;
-
-        pdbg("t0=%u t1=%u t2=%u t6z=%u\n", t0, t1, t2, t6z);
-
-        mck = clk_get(NULL, "mck");
-        BUG_ON(IS_ERR(mck));
-        mck_hz = clk_get_rate(mck);
-        pdbg("mck_hz=%u\n", mck_hz);
-
-        cycle = calc_mck_cycles(t0, mck_hz);
-        setup = calc_mck_cycles(t1, mck_hz);
-        pulse = calc_mck_cycles(t2, mck_hz);
-        data_float = calc_mck_cycles(t6z, mck_hz);
-
-        pdbg("cycle=%u setup=%u pulse=%u data_float=%u\n",
-             cycle, setup, pulse, data_float);
-
-        set_smc_timings(chipselect, cycle, setup, pulse, data_float, use_iordy);
-}
-
-static void at91_ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
-                                void *buf, unsigned int len)
-{
-        ide_hwif_t *hwif = drive->hwif;
-        struct ide_io_ports *io_ports = &hwif->io_ports;
-        u8 chipselect = hwif->select_data;
-        unsigned long mode;
-
-        pdbg("cs %u buf %p len %d\n", chipselect, buf, len);
-
-        len++;
-
-        enter_16bit(chipselect, mode);
-        readsw((void __iomem *)io_ports->data_addr, buf, len / 2);
-        leave_16bit(chipselect, mode);
-}
-
-static void at91_ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
-                                 void *buf, unsigned int len)
-{
-        ide_hwif_t *hwif = drive->hwif;
-        struct ide_io_ports *io_ports = &hwif->io_ports;
-        u8 chipselect = hwif->select_data;
-        unsigned long mode;
-
-        pdbg("cs %u buf %p len %d\n", chipselect,  buf, len);
-
-        enter_16bit(chipselect, mode);
-        writesw((void __iomem *)io_ports->data_addr, buf, len / 2);
-        leave_16bit(chipselect, mode);
-}
-
-static void at91_ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
-        struct ide_timing *timing;
-        u8 chipselect = hwif->select_data;
-        int use_iordy = 0;
-        const u8 pio = drive->pio_mode - XFER_PIO_0;
-
-        pdbg("chipselect %u pio %u\n", chipselect, pio);
-
-        timing = ide_timing_find_mode(XFER_PIO_0 + pio);
-        BUG_ON(!timing);
-
-        if (ide_pio_need_iordy(drive, pio))
-                use_iordy = 1;
-
-        apply_timings(chipselect, pio, timing, use_iordy);
-}
-
-static const struct ide_tp_ops at91_ide_tp_ops = {
-        .exec_command   = ide_exec_command,
-        .read_status    = ide_read_status,
-        .read_altstatus = ide_read_altstatus,
-        .write_devctl   = ide_write_devctl,
-
-        .dev_select     = ide_dev_select,
-        .tf_load        = ide_tf_load,
-        .tf_read        = ide_tf_read,
-
-        .input_data     = at91_ide_input_data,
-        .output_data    = at91_ide_output_data,
-};
-
-static const struct ide_port_ops at91_ide_port_ops = {
-        .set_pio_mode   = at91_ide_set_pio_mode,
-};
-
-static const struct ide_port_info at91_ide_port_info __initdata = {
-        .port_ops       = &at91_ide_port_ops,
-        .tp_ops         = &at91_ide_tp_ops,
-        .host_flags     = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA | IDE_HFLAG_SINGLE |
-                          IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_UNMASK_IRQS,
-        .pio_mask       = ATA_PIO6,
-        .chipset        = ide_generic,
-};
-
-/*
- * If interrupt is delivered through GPIO, IRQ are triggered on falling
- * and rising edge of signal. Whereas IDE device request interrupt on high
- * level (rising edge in our case). This mean we have fake interrupts, so
- * we need to check interrupt pin and exit instantly from ISR when line
- * is on low level.
- */
-
-irqreturn_t at91_irq_handler(int irq, void *dev_id)
-{
-        int ntries = 8;
-        int pin_val1, pin_val2;
-
-        /* additional deglitch, line can be noisy in badly designed PCB */
-        do {
-                pin_val1 = at91_get_gpio_value(irq);
-                pin_val2 = at91_get_gpio_value(irq);
-        } while (pin_val1 != pin_val2 && --ntries > 0);
-
-        if (pin_val1 == 0 || ntries <= 0)
-                return IRQ_HANDLED;
-
-        return ide_intr(irq, dev_id);
-}
-
-static int __init at91_ide_probe(struct platform_device *pdev)
-{
-        int ret;
-        struct ide_hw hw, *hws[] = { &hw };
-        struct ide_host *host;
-        struct resource *res;
-        unsigned long tf_base = 0, ctl_base = 0;
-        struct at91_cf_data *board = pdev->dev.platform_data;
-
-        if (!board)
-                return -ENODEV;
-
-        if (board->det_pin && at91_get_gpio_value(board->det_pin) != 0) {
-                perr("no device detected\n");
-                return -ENODEV;
-        }
-
-        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!res) {
-                perr("can't get memory resource\n");
-                return -ENODEV;
-        }
-
-        if (!devm_request_mem_region(&pdev->dev, res->start + TASK_FILE,
-                                     REGS_SIZE, "ide") ||
-            !devm_request_mem_region(&pdev->dev, res->start + ALT_MODE,
-                                     REGS_SIZE, "alt")) {
-                perr("memory resources in use\n");
-                return -EBUSY;
-        }
-
-        pdbg("chipselect %u irq %u res %08lx\n", board->chipselect,
-             board->irq_pin, (unsigned long) res->start);
-
-        tf_base = (unsigned long) devm_ioremap(&pdev->dev, res->start + TASK_FILE,
-                                               REGS_SIZE);
-        ctl_base = (unsigned long) devm_ioremap(&pdev->dev, res->start + ALT_MODE,
-                                                REGS_SIZE);
-        if (!tf_base || !ctl_base) {
-                perr("can't map memory regions\n");
-                return -EBUSY;
-        }
-
-        memset(&hw, 0, sizeof(hw));
-
-        if (board->flags & AT91_IDE_SWAP_A0_A2) {
-                /* workaround for stupid hardware bug */
-                hw.io_ports.data_addr   = tf_base + 0;
-                hw.io_ports.error_addr  = tf_base + 4;
-                hw.io_ports.nsect_addr  = tf_base + 2;
-                hw.io_ports.lbal_addr   = tf_base + 6;
-                hw.io_ports.lbam_addr   = tf_base + 1;
-                hw.io_ports.lbah_addr   = tf_base + 5;
-                hw.io_ports.device_addr = tf_base + 3;
-                hw.io_ports.command_addr = tf_base + 7;
-                hw.io_ports.ctl_addr    = ctl_base + 3;
-        } else
-                ide_std_init_ports(&hw, tf_base, ctl_base + 6);
-
-        hw.irq = board->irq_pin;
-        hw.dev = &pdev->dev;
-
-        host = ide_host_alloc(&at91_ide_port_info, hws, 1);
-        if (!host) {
-                perr("failed to allocate ide host\n");
-                return -ENOMEM;
-        }
-
-        /* setup Static Memory Controller - PIO 0 as default */
-        apply_timings(board->chipselect, 0, ide_timing_find_mode(XFER_PIO_0), 0);
-
-        /* with GPIO interrupt we have to do quirks in handler */
-        if (gpio_is_valid(board->irq_pin))
-                host->irq_handler = at91_irq_handler;
-
-        host->ports[0]->select_data = board->chipselect;
-
-        ret = ide_host_register(host, &at91_ide_port_info, hws);
-        if (ret) {
-                perr("failed to register ide host\n");
-                goto err_free_host;
-        }
-        platform_set_drvdata(pdev, host);
-        return 0;
-
-err_free_host:
-        ide_host_free(host);
-        return ret;
-}
-
-static int __exit at91_ide_remove(struct platform_device *pdev)
-{
-        struct ide_host *host = platform_get_drvdata(pdev);
-
-        ide_host_remove(host);
-        return 0;
-}
-
-static struct platform_driver at91_ide_driver = {
-        .driver = {
-                .name = DRV_NAME,
-                .owner = THIS_MODULE,
-        },
-        .remove = __exit_p(at91_ide_remove),
-};
-
-static int __init at91_ide_init(void)
-{
-        return platform_driver_probe(&at91_ide_driver, at91_ide_probe);
-}
-
-static void __exit at91_ide_exit(void)
-{
-        platform_driver_unregister(&at91_ide_driver);
-}
-
-module_init(at91_ide_init);
-module_exit(at91_ide_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Stanislaw Gruszka <stf_xl@wp.pl>");
-
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index a3ad957507dc..ee3c122c0599 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -307,8 +307,12 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
                 device_init_wakeup(&pdev->dev, 1);
 
         platform_set_drvdata(pdev, rtc);
-        rtc->rtt = (void __force __iomem *) (AT91_VA_BASE_SYS - AT91_BASE_SYS);
-        rtc->rtt += r->start;
+        rtc->rtt = ioremap(r->start, resource_size(r));
+        if (!rtc->rtt) {
+                dev_err(&pdev->dev, "failed to map registers, aborting.\n");
+                ret = -ENOMEM;
+                goto fail;
+        }
 
         mr = rtt_readl(rtc, MR);
 
@@ -326,7 +330,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
                                 &at91_rtc_ops, THIS_MODULE);
         if (IS_ERR(rtc->rtcdev)) {
                 ret = PTR_ERR(rtc->rtcdev);
-                goto fail;
+                goto fail_register;
         }
 
         /* register irq handler after we know what name we'll use */
@@ -351,6 +355,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
 
         return 0;
 
+fail_register:
+        iounmap(rtc->rtt);
 fail:
         platform_set_drvdata(pdev, NULL);
         kfree(rtc);
@@ -371,6 +377,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev)
 
         rtc_device_unregister(rtc->rtcdev);
 
+        iounmap(rtc->rtt);
         platform_set_drvdata(pdev, NULL);
         kfree(rtc);
         return 0;