* [PATCH 1/2] i2c: exynos5: remove an unnecessary read of FIFO_STATUS register @ 2014-06-25 10:38 Naveen Krishna Chatradhi 2014-06-25 10:38 ` [PATCH 2/2] i2c: exynos5: fix minor styling nits Naveen Krishna Chatradhi 0 siblings, 1 reply; 4+ messages in thread From: Naveen Krishna Chatradhi @ 2014-06-25 10:38 UTC (permalink / raw) To: linux-samsung-soc, linux-i2c Cc: naveenkrishna.ch, linux-arm-kernel, sjg, linux-kernel, wsa, cpgs, broonie This patch removes an extra read of FIFO_STATUS register in the interrrupt service routine. Which is read again before the actual use. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> --- drivers/i2c/busses/i2c-exynos5.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index 63d2292..0d1a7bc 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -405,7 +405,6 @@ static irqreturn_t exynos5_i2c_irq(int irqno, void *dev_id) int_status = readl(i2c->regs + HSI2C_INT_STATUS); writel(int_status, i2c->regs + HSI2C_INT_STATUS); - fifo_status = readl(i2c->regs + HSI2C_FIFO_STATUS); /* handle interrupt related to the transfer status */ if (int_status & HSI2C_INT_I2C) { -- 1.7.9.5 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 2/2] i2c: exynos5: fix minor styling nits 2014-06-25 10:38 [PATCH 1/2] i2c: exynos5: remove an unnecessary read of FIFO_STATUS register Naveen Krishna Chatradhi @ 2014-06-25 10:38 ` Naveen Krishna Chatradhi 2014-06-25 10:49 ` Sachin Kamat 0 siblings, 1 reply; 4+ messages in thread From: Naveen Krishna Chatradhi @ 2014-06-25 10:38 UTC (permalink / raw) To: linux-samsung-soc, linux-i2c Cc: naveenkrishna.ch, linux-arm-kernel, sjg, linux-kernel, wsa, cpgs, broonie This patch removes an extra line and fixes a styling nit in exynos5_i2c_message_start() Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> --- drivers/i2c/busses/i2c-exynos5.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index 0d1a7bc..4c2e6f3 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -525,7 +525,7 @@ static void exynos5_i2c_message_start(struct exynos5_i2c *i2c, int stop) if (i2c->msg->flags & I2C_M_RD) { i2c_ctl |= HSI2C_RXCHON; - i2c_auto_conf = HSI2C_READ_WRITE; + i2c_auto_conf |= HSI2C_READ_WRITE; trig_lvl = (i2c->msg->len > i2c->variant->fifo_depth) ? (i2c->variant->fifo_depth * 3 / 4) : i2c->msg->len; @@ -548,7 +548,6 @@ static void exynos5_i2c_message_start(struct exynos5_i2c *i2c, int stop) writel(fifo_ctl, i2c->regs + HSI2C_FIFO_CTL); writel(i2c_ctl, i2c->regs + HSI2C_CTL); - /* * Enable interrupts before starting the transfer so that we don't * miss any INT_I2C interrupts. -- 1.7.9.5 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 2/2] i2c: exynos5: fix minor styling nits 2014-06-25 10:38 ` [PATCH 2/2] i2c: exynos5: fix minor styling nits Naveen Krishna Chatradhi @ 2014-06-25 10:49 ` Sachin Kamat 2014-06-26 4:58 ` Naveen Krishna Ch 0 siblings, 1 reply; 4+ messages in thread From: Sachin Kamat @ 2014-06-25 10:49 UTC (permalink / raw) To: Naveen Krishna Chatradhi Cc: linux-samsung-soc, linux-i2c, Naveen Krishna, linux-arm-kernel, sjg, open list, Wolfram Sang, cpgs, broonie Hi Naveen, On Wed, Jun 25, 2014 at 4:08 PM, Naveen Krishna Chatradhi <ch.naveen@samsung.com> wrote: > This patch removes an extra line and fixes a styling nit > in exynos5_i2c_message_start() > > Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> > --- > drivers/i2c/busses/i2c-exynos5.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c > index 0d1a7bc..4c2e6f3 100644 > --- a/drivers/i2c/busses/i2c-exynos5.c > +++ b/drivers/i2c/busses/i2c-exynos5.c > @@ -525,7 +525,7 @@ static void exynos5_i2c_message_start(struct exynos5_i2c *i2c, int stop) > if (i2c->msg->flags & I2C_M_RD) { > i2c_ctl |= HSI2C_RXCHON; > > - i2c_auto_conf = HSI2C_READ_WRITE; > + i2c_auto_conf |= HSI2C_READ_WRITE; This change looks more than just a styling nit. Please update the commit message accordingly. -- Regards, Sachin. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 2/2] i2c: exynos5: fix minor styling nits 2014-06-25 10:49 ` Sachin Kamat @ 2014-06-26 4:58 ` Naveen Krishna Ch 0 siblings, 0 replies; 4+ messages in thread From: Naveen Krishna Ch @ 2014-06-26 4:58 UTC (permalink / raw) To: Sachin Kamat Cc: Naveen Krishna Chatradhi, linux-samsung-soc, linux-i2c, linux-arm-kernel, sjg, open list, Wolfram Sang, cpgs, broonie Hello Sachin, On 25 June 2014 16:19, Sachin Kamat <spk.linux@gmail.com> wrote: > Hi Naveen, > > On Wed, Jun 25, 2014 at 4:08 PM, Naveen Krishna Chatradhi > <ch.naveen@samsung.com> wrote: >> This patch removes an extra line and fixes a styling nit >> in exynos5_i2c_message_start() >> >> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> >> --- >> drivers/i2c/busses/i2c-exynos5.c | 3 +-- >> 1 file changed, 1 insertion(+), 2 deletions(-) >> >> diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c >> index 0d1a7bc..4c2e6f3 100644 >> --- a/drivers/i2c/busses/i2c-exynos5.c >> +++ b/drivers/i2c/busses/i2c-exynos5.c >> @@ -525,7 +525,7 @@ static void exynos5_i2c_message_start(struct exynos5_i2c *i2c, int stop) >> if (i2c->msg->flags & I2C_M_RD) { >> i2c_ctl |= HSI2C_RXCHON; >> >> - i2c_auto_conf = HSI2C_READ_WRITE; >> + i2c_auto_conf |= HSI2C_READ_WRITE; > > This change looks more than just a styling nit. Please update the commit message > accordingly. Yea, change looks so. But, This is not an going to change the way code works. As, i2c_auto_conf is initialized to '0' at the beginning of the function and HSI2C_READ_WRITE is defined as (1u << 16) This being the 1st usage, I thought using "|=" is better way of assignment. Will edit the commit message accordingly. > > -- > Regards, > Sachin. Thanks, -- Shine bright, (: Nav :) ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2014-06-26 4:59 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-06-25 10:38 [PATCH 1/2] i2c: exynos5: remove an unnecessary read of FIFO_STATUS register Naveen Krishna Chatradhi 2014-06-25 10:38 ` [PATCH 2/2] i2c: exynos5: fix minor styling nits Naveen Krishna Chatradhi 2014-06-25 10:49 ` Sachin Kamat 2014-06-26 4:58 ` Naveen Krishna Ch
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