diff options
| author |   Nicholas Mc Guire <hofrat@osadl.org> | 2019-04-11 05:31:21 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-16 13:15:54 +0200 |
| commit | c901556a43d282f6666e5fb8fbd3066dcb17c907 (patch) | |
| tree | beb139e57bc9e8a4bc826588f5f4f28f80961045 /drivers/staging | |
| parent | staging: wilc1000: Avoid GFP_KERNEL allocation from atomic context. (diff) | |
| download | linux-dev-c901556a43d282f6666e5fb8fbd3066dcb17c907.tar.xz linux-dev-c901556a43d282f6666e5fb8fbd3066dcb17c907.zip | |
staging: wilc1000: give usleep_range a range
usleep_range() is called in non-atomic context so there is little point
in setting min==max as the jitter of hrtimer is determined by interruptions
anyway. usleep_range can only perform the intended coalescence if some
room for placing the hrtimer is provided. Given the range of milliseconds
the delay will be 2+ anyway - so make it 2-2.5 ms which gives hrtimers
space to optimize without negatively impacting performance.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/wilc1000/wilc_wlan.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c index f5443dea3a09..2b309c8a8fb2 100644 --- a/drivers/staging/wilc1000/wilc_wlan.c +++ b/drivers/staging/wilc1000/wilc_wlan.c @@ -408,7 +408,7 @@ void chip_wakeup(struct wilc *wilc) wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1)); do { - usleep_range(2 * 1000, 2 * 1000); + usleep_range(2000, 2500); wilc_get_chipid(wilc, true); } while (wilc_get_chipid(wilc, true) == 0); } while (wilc_get_chipid(wilc, true) == 0); @@ -423,7 +423,7 @@ void chip_wakeup(struct wilc *wilc) &clk_status_reg); while ((clk_status_reg & 0x1) == 0) { - usleep_range(2 * 1000, 2 * 1000); + usleep_range(2000, 2500); wilc->hif_func->hif_read_reg(wilc, 0xf1, &clk_status_reg); |