From: Shubhrajyoti D <shubhrajyoti@ti.com> To: linux-omap@vger.kernel.org Cc: linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, ben-linux@fluff.org, tony@atomide.com, w.sang@pengutronix.de, Felipe Balbi <balbi@ti.com>, Shubhrajyoti D <shubhrajyoti@ti.com> Subject: [PATCHv6 02/24] i2c: omap: simplify num_bytes handling Date: Tue, 14 Aug 2012 19:48:44 +0530 [thread overview] Message-ID: <1344953946-13005-3-git-send-email-shubhrajyoti@ti.com> (raw) In-Reply-To: <1344953946-13005-1-git-send-email-shubhrajyoti@ti.com> From: Felipe Balbi <balbi@ti.com> trivial patch, no functional changes If the fifo is disabled or fifo_size is 0 the num_bytes is set to 1. Else it is set to fifo_size or in case of a draining interrupt the remaining bytes in the buff stat. So the zero check is redundant and can be safely optimised. Signed-off-by: Felipe Balbi <balbi@ti.com> Reviewed-by : Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> --- drivers/i2c/busses/i2c-omap.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 6449383..9b003a3 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -812,8 +812,7 @@ complete: OMAP_I2C_BUFSTAT_REG) >> 8) & 0x3F; } - while (num_bytes) { - num_bytes--; + while (num_bytes--) { w = omap_i2c_read_reg(dev, OMAP_I2C_DATA_REG); if (dev->buf_len) { *dev->buf++ = w; @@ -855,8 +854,7 @@ complete: OMAP_I2C_BUFSTAT_REG) & 0x3F; } - while (num_bytes) { - num_bytes--; + while (num_bytes--) { w = 0; if (dev->buf_len) { w = *dev->buf++; -- 1.7.5.4
WARNING: multiple messages have this Message-ID (diff)
From: shubhrajyoti@ti.com (Shubhrajyoti D) To: linux-arm-kernel@lists.infradead.org Subject: [PATCHv6 02/24] i2c: omap: simplify num_bytes handling Date: Tue, 14 Aug 2012 19:48:44 +0530 [thread overview] Message-ID: <1344953946-13005-3-git-send-email-shubhrajyoti@ti.com> (raw) In-Reply-To: <1344953946-13005-1-git-send-email-shubhrajyoti@ti.com> From: Felipe Balbi <balbi@ti.com> trivial patch, no functional changes If the fifo is disabled or fifo_size is 0 the num_bytes is set to 1. Else it is set to fifo_size or in case of a draining interrupt the remaining bytes in the buff stat. So the zero check is redundant and can be safely optimised. Signed-off-by: Felipe Balbi <balbi@ti.com> Reviewed-by : Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> --- drivers/i2c/busses/i2c-omap.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 6449383..9b003a3 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -812,8 +812,7 @@ complete: OMAP_I2C_BUFSTAT_REG) >> 8) & 0x3F; } - while (num_bytes) { - num_bytes--; + while (num_bytes--) { w = omap_i2c_read_reg(dev, OMAP_I2C_DATA_REG); if (dev->buf_len) { *dev->buf++ = w; @@ -855,8 +854,7 @@ complete: OMAP_I2C_BUFSTAT_REG) & 0x3F; } - while (num_bytes) { - num_bytes--; + while (num_bytes--) { w = 0; if (dev->buf_len) { w = *dev->buf++; -- 1.7.5.4
next prev parent reply other threads:[~2012-08-14 14:18 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-08-14 14:18 [PATCHv6 00/24] I2C big cleanup Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 01/24] i2c: omap: switch to devm_* API Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D [this message] 2012-08-14 14:18 ` [PATCHv6 02/24] i2c: omap: simplify num_bytes handling Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 03/24] i2c: omap: decrease indentation level on data handling Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 04/24] i2c: omap: add blank lines Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 05/24] i2c: omap: simplify omap_i2c_ack_stat() Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 07/24] i2c: omap: improve i462 errata handling Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 08/24] i2c: omap: re-factor receive/transmit data loop Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 09/24] i2c: omap: switch over to do {} while loop Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 11/24] i2c: omap: switch to platform_get_irq() Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 13/24] i2c: omap: simplify errata check Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 14/24] i2c: omap: always return IRQ_HANDLED Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D [not found] ` <1344953946-13005-15-git-send-email-shubhrajyoti-l0cyMroinI0@public.gmane.org> 2012-08-16 3:18 ` Hebbar, Gururaja 2012-08-16 3:18 ` Hebbar, Gururaja 2012-08-14 14:18 ` [PATCHv6 15/24] i2c: omap: simplify IRQ exit path Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 16/24] i2c: omap: resize fifos before each message Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 17/24] i2c: omap: get rid of the "complete" label Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D [not found] ` <1344953946-13005-1-git-send-email-shubhrajyoti-l0cyMroinI0@public.gmane.org> 2012-08-14 14:18 ` [PATCHv6 06/24] i2c: omap: split out [XR]DR and [XR]RDY Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 10/24] i2c: omap: ack IRQ in parts Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:18 ` [PATCHv6 12/24] i2c: omap: bus: add a receiver flag Shubhrajyoti D 2012-08-14 14:18 ` Shubhrajyoti D 2012-08-14 14:19 ` [PATCHv6 18/24] i2c: omap: remove redundant status read Shubhrajyoti D 2012-08-14 14:19 ` Shubhrajyoti D 2012-08-14 14:19 ` [PATCHv6 19/24] i2c: omap: always return IRQ_HANDLED Shubhrajyoti D 2012-08-14 14:19 ` Shubhrajyoti D 2012-08-14 14:19 ` [PATCHv6 20/24] i2c: omap: switch to threaded IRQ support Shubhrajyoti D 2012-08-14 14:19 ` Shubhrajyoti D 2012-08-14 14:19 ` [PATCHv6 21/24] i2c: omap: remove unnecessary pm_runtime_suspended check Shubhrajyoti D 2012-08-14 14:19 ` Shubhrajyoti D 2012-08-14 14:19 ` [PATCHv6 22/24] i2c: omap: switch over to autosuspend API Shubhrajyoti D 2012-08-14 14:19 ` Shubhrajyoti D 2012-08-14 14:19 ` [PATCHv6 23/24] i2c: omap: sanitize exit path Shubhrajyoti D 2012-08-14 14:19 ` Shubhrajyoti D 2012-08-14 14:19 ` [PATCHv6 24/24] i2c: omap: Prevent NULL pointer dereference in remove Shubhrajyoti D 2012-08-14 14:19 ` Shubhrajyoti D [not found] ` <1344953946-13005-25-git-send-email-shubhrajyoti-l0cyMroinI0@public.gmane.org> 2012-08-15 6:03 ` Felipe Balbi 2012-08-15 6:03 ` Felipe Balbi
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