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| author | Arnd Bergmann <arnd@arndb.de> | 2013-03-14 22:55:59 (GMT) |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2013-03-14 22:55:59 (GMT) |
| commit | 7ac6c89189c669fd5f883937f291f18d324d470b (patch) | |
| tree | 5f0712bdedac45a40148ede0064d4e6eddb4260e /drivers/char/random.c | |
| parent | 6fdd496e07f511a94ba27e4a1433038b32d6af05 (diff) | |
| parent | 0ed66befaae893e82c9f016238282d73ef9fd6c7 (diff) | |
| download | linux-fsl-qoriq-7ac6c89189c669fd5f883937f291f18d324d470b.tar.xz | |
Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
From Nicolas Ferre <nicolas.ferre@atmel.com>:
Two patches for Device Tree on at91sam9x5/NAND.
Two more for fixing PM suspend/resume IRQ on AIC5 and
GPIO used with pinctrl.
* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
ARM: at91: fix infinite loop in at91_irq_suspend/resume
ARM: at91: add gpio suspend/resume support when using pinctrl
ARM: at91: dt: at91sam9x5: complete NAND pinctrl
ARM: at91: dt: at91sam9x5: correct NAND pins comments
Includes an update to -rc2
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 594bda9..32a6c57 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -852,6 +852,7 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, int reserved) { unsigned long flags; + int wakeup_write = 0; /* Hold lock while accounting */ spin_lock_irqsave(&r->lock, flags); @@ -873,10 +874,8 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, else r->entropy_count = reserved; - if (r->entropy_count < random_write_wakeup_thresh) { - wake_up_interruptible(&random_write_wait); - kill_fasync(&fasync, SIGIO, POLL_OUT); - } + if (r->entropy_count < random_write_wakeup_thresh) + wakeup_write = 1; } DEBUG_ENT("debiting %zu entropy credits from %s%s\n", @@ -884,6 +883,11 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, spin_unlock_irqrestore(&r->lock, flags); + if (wakeup_write) { + wake_up_interruptible(&random_write_wait); + kill_fasync(&fasync, SIGIO, POLL_OUT); + } + return nbytes; } |