diff options
| author | Doug Anderson <dianders@chromium.org> | 2014-08-22 10:43:44 -0700 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-09-29 22:41:18 +0200 |
| commit | 29209338b22a61c9ba67badd5f36e96cda1892d8 (patch) | |
| tree | 075156e346522b87506ec3c81b2b4304eda33b56 /drivers/i2c | |
| parent | aa5beaf62588d095398415af5d0e14c79e2478a3 (diff) | |
| download | lwn-29209338b22a61c9ba67badd5f36e96cda1892d8.tar.gz lwn-29209338b22a61c9ba67badd5f36e96cda1892d8.zip | |
i2c: rk3x: Remove unlikely() annotations
Having a transfer more than 32 bits is not all that unlikely. Remove
the annotation.
The unlikely in the IRQ handler can't gain us much. It's not in a
loop, so at most it would save 1 instruction per IRQ, which isn't
much. In fact on the compiler I tested it produced the exact same
code. Remove it too.
Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-rk3x.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c index 93cfc837200b..b41d97965669 100644 --- a/drivers/i2c/busses/i2c-rk3x.c +++ b/drivers/i2c/busses/i2c-rk3x.c @@ -208,7 +208,7 @@ static void rk3x_i2c_prepare_read(struct rk3x_i2c *i2c) * The hw can read up to 32 bytes at a time. If we need more than one * chunk, send an ACK after the last byte of the current chunk. */ - if (unlikely(len > 32)) { + if (len > 32) { len = 32; con &= ~REG_CON_LASTACK; } else { @@ -403,7 +403,7 @@ static irqreturn_t rk3x_i2c_irq(int irqno, void *dev_id) } /* is there anything left to handle? */ - if (unlikely((ipd & REG_INT_ALL) == 0)) + if ((ipd & REG_INT_ALL) == 0) goto out; switch (i2c->state) { |