mfd/rtc/gpio: twl: No need to allocate bigger buffer for write

Since the twl-core has been converted to use regmap it is no longer needed
to allocate bigger buffer for data when writing to twl.

CC: Grant Likely <grant.likely@secretlab.ca>
CC: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

5 files changed, 29 insertions, 34 deletions

diff --git a/drivers/gpio/gpio-twl4030.c b/drivers/gpio/gpio-twl4030.c
index c5f8ca233e1f..88829c3337bf 100644
--- a/drivers/gpio/gpio-twl4030.c
+++ b/drivers/gpio/gpio-twl4030.c
@@ -354,13 +354,13 @@ static struct gpio_chip twl_gpiochip = {
 
 static int __devinit gpio_twl4030_pulls(u32 ups, u32 downs)
 {
-        u8              message[6];
+        u8              message[5];
         unsigned        i, gpio_bit;
 
         /* For most pins, a pulldown was enabled by default.
          * We should have data that's specific to this board.
          */
-        for (gpio_bit = 1, i = 1; i < 6; i++) {
+        for (gpio_bit = 1, i = 0; i < 5; i++) {
                 u8              bit_mask;
                 unsigned        j;
 
@@ -379,16 +379,16 @@ static int __devinit gpio_twl4030_pulls(u32 ups, u32 downs)
 
 static int __devinit gpio_twl4030_debounce(u32 debounce, u8 mmc_cd)
 {
-        u8              message[4];
+        u8              message[3];
 
         /* 30 msec of debouncing is always used for MMC card detect,
          * and is optional for everything else.
          */
-        message[1] = (debounce & 0xff) | (mmc_cd & 0x03);
+        message[0] = (debounce & 0xff) | (mmc_cd & 0x03);
         debounce >>= 8;
-        message[2] = (debounce & 0xff);
+        message[1] = (debounce & 0xff);
         debounce >>= 8;
-        message[3] = (debounce & 0x03);
+        message[2] = (debounce & 0x03);
 
         return twl_i2c_write(TWL4030_MODULE_GPIO, message,
                                 REG_GPIO_DEBEN1, 3);
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 5043f505a230..a55ab15ecf1a 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -344,7 +344,7 @@ int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
         twl = &twl_modules[sid];
 
         ret = regmap_bulk_write(twl->regmap, twl_map[mod_no].base + reg,
-                                &value[1], num_bytes);
+                                value, num_bytes);
 
         if (ret)
                 pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n",
@@ -406,12 +406,7 @@ EXPORT_SYMBOL(twl_i2c_read);
  */
 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
 {
-
-        /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
-        u8 temp_buffer[2] = { 0 };
-        /* offset 1 contains the data */
-        temp_buffer[1] = value;
-        return twl_i2c_write(mod_no, temp_buffer, reg, 1);
+        return twl_i2c_write(mod_no, &value, reg, 1);
 }
 EXPORT_SYMBOL(twl_i2c_write_u8);
 
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index ad733d76207a..e900402633f5 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -501,7 +501,7 @@ static void twl4030_sih_bus_sync_unlock(struct irq_data *data)
                 } imr;
 
                 /* byte[0] gets overwritten as we write ... */
-                imr.word = cpu_to_le32(agent->imr << 8);
+                imr.word = cpu_to_le32(agent->imr);
                 agent->imr_change_pending = false;
 
                 /* write the whole mask ... simpler than subsetting it */
@@ -526,7 +526,7 @@ static void twl4030_sih_bus_sync_unlock(struct irq_data *data)
                  * any processor on the other IRQ line, EDR registers are
                  * shared.
                  */
-                status = twl_i2c_read(sih->module, bytes + 1,
+                status = twl_i2c_read(sih->module, bytes,
                                 sih->edr_offset, sih->bytes_edr);
                 if (status) {
                         pr_err("twl4030: %s, %s --> %d\n", __func__,
@@ -538,7 +538,7 @@ static void twl4030_sih_bus_sync_unlock(struct irq_data *data)
                 while (edge_change) {
                         int             i = fls(edge_change) - 1;
                         struct irq_data *idata;
-                        int             byte = 1 + (i >> 2);
+                        int             byte = i >> 2;
                         int             off = (i & 0x3) * 2;
                         unsigned int    type;
 
diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c
index b76902f1e44a..277a8dba42d5 100644
--- a/drivers/mfd/twl6030-irq.c
+++ b/drivers/mfd/twl6030-irq.c
@@ -355,7 +355,7 @@ int twl6030_init_irq(struct device *dev, int irq_num)
         static struct irq_chip  twl6030_irq_chip;
         int                     status = 0;
         int                     i;
-        u8                      mask[4];
+        u8                      mask[3];
 
         nr_irqs = TWL6030_NR_IRQS;
 
@@ -370,9 +370,9 @@ int twl6030_init_irq(struct device *dev, int irq_num)
 
         irq_end = irq_base + nr_irqs;
 
+        mask[0] = 0xFF;
         mask[1] = 0xFF;
         mask[2] = 0xFF;
-        mask[3] = 0xFF;
 
         /* mask all int lines */
         twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_MSK_LINE_A, 3);
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 9277d945bf48..8b7464c8b5cf 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -233,7 +233,7 @@ static int twl_rtc_alarm_irq_enable(struct device *dev, unsigned enabled)
  */
 static int twl_rtc_read_time(struct device *dev, struct rtc_time *tm)
 {
-        unsigned char rtc_data[ALL_TIME_REGS + 1];
+        unsigned char rtc_data[ALL_TIME_REGS];
         int ret;
         u8 save_control;
         u8 rtc_control;
@@ -300,15 +300,15 @@ static int twl_rtc_read_time(struct device *dev, struct rtc_time *tm)
 static int twl_rtc_set_time(struct device *dev, struct rtc_time *tm)
 {
         unsigned char save_control;
-        unsigned char rtc_data[ALL_TIME_REGS + 1];
+        unsigned char rtc_data[ALL_TIME_REGS];
         int ret;
 
-        rtc_data[1] = bin2bcd(tm->tm_sec);
-        rtc_data[2] = bin2bcd(tm->tm_min);
-        rtc_data[3] = bin2bcd(tm->tm_hour);
-        rtc_data[4] = bin2bcd(tm->tm_mday);
-        rtc_data[5] = bin2bcd(tm->tm_mon + 1);
-        rtc_data[6] = bin2bcd(tm->tm_year - 100);
+        rtc_data[0] = bin2bcd(tm->tm_sec);
+        rtc_data[1] = bin2bcd(tm->tm_min);
+        rtc_data[2] = bin2bcd(tm->tm_hour);
+        rtc_data[3] = bin2bcd(tm->tm_mday);
+        rtc_data[4] = bin2bcd(tm->tm_mon + 1);
+        rtc_data[5] = bin2bcd(tm->tm_year - 100);
 
         /* Stop RTC while updating the TC registers */
         ret = twl_rtc_read_u8(&save_control, REG_RTC_CTRL_REG);
@@ -341,7 +341,7 @@ out:
  */
 static int twl_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
 {
-        unsigned char rtc_data[ALL_TIME_REGS + 1];
+        unsigned char rtc_data[ALL_TIME_REGS];
         int ret;
 
         ret = twl_i2c_read(TWL_MODULE_RTC, rtc_data,
@@ -368,19 +368,19 @@ static int twl_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
 
 static int twl_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
 {
-        unsigned char alarm_data[ALL_TIME_REGS + 1];
+        unsigned char alarm_data[ALL_TIME_REGS];
         int ret;
 
         ret = twl_rtc_alarm_irq_enable(dev, 0);
         if (ret)
                 goto out;
 
-        alarm_data[1] = bin2bcd(alm->time.tm_sec);
-        alarm_data[2] = bin2bcd(alm->time.tm_min);
-        alarm_data[3] = bin2bcd(alm->time.tm_hour);
-        alarm_data[4] = bin2bcd(alm->time.tm_mday);
-        alarm_data[5] = bin2bcd(alm->time.tm_mon + 1);
-        alarm_data[6] = bin2bcd(alm->time.tm_year - 100);
+        alarm_data[0] = bin2bcd(alm->time.tm_sec);
+        alarm_data[1] = bin2bcd(alm->time.tm_min);
+        alarm_data[2] = bin2bcd(alm->time.tm_hour);
+        alarm_data[3] = bin2bcd(alm->time.tm_mday);
+        alarm_data[4] = bin2bcd(alm->time.tm_mon + 1);
+        alarm_data[5] = bin2bcd(alm->time.tm_year - 100);
 
         /* update all the alarm registers in one shot */
         ret = twl_i2c_write(TWL_MODULE_RTC, alarm_data,