diff options
author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-12-15 01:47:20 -0500 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-12-15 03:35:08 -0500 |
commit | e47c4f70ea41fd973eec80a9388a1347d3d27896 (patch) | |
tree | baf261863ea13ccee04e2c150b68abb7034e2546 /drivers/input | |
parent | a61cd03827eceefcec19eefc6e1173703fdc5e5d (diff) |
Input: at32psif - do not sleep in atomic context
We can't use msleep() while holding a spinlock, moreower serio's write()
method is supposed to be useable from inettrupt context. Let's do what
i8042 does and poll the status register every 50 us (with udelay).
Reported-by: Marjan Fojkar <marjan@pajkc.eu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input')
-rw-r--r-- | drivers/input/serio/at32psif.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/serio/at32psif.c b/drivers/input/serio/at32psif.c index 50bdc00c49d..b54452a8c77 100644 --- a/drivers/input/serio/at32psif.c +++ b/drivers/input/serio/at32psif.c | |||
@@ -137,7 +137,7 @@ static int psif_write(struct serio *io, unsigned char val) | |||
137 | spin_lock_irqsave(&psif->lock, flags); | 137 | spin_lock_irqsave(&psif->lock, flags); |
138 | 138 | ||
139 | while (!(psif_readl(psif, SR) & PSIF_BIT(TXEMPTY)) && timeout--) | 139 | while (!(psif_readl(psif, SR) & PSIF_BIT(TXEMPTY)) && timeout--) |
140 | msleep(10); | 140 | udelay(50); |
141 | 141 | ||
142 | if (timeout >= 0) { | 142 | if (timeout >= 0) { |
143 | psif_writel(psif, THR, val); | 143 | psif_writel(psif, THR, val); |