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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2013-04-08 21:36:54 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2013-04-08 21:36:54 +0200 |
| commit | 0b824f8dad9fdfc7c1bf9c1d3ac744075eb73ec6 (patch) | |
| tree | 7559859702f2fa02f6a4db64cf10f6c2e3f80c21 /drivers/char/random.c | |
| parent | 6dbe51c251a327e012439c4772097a13df43c5b8 (diff) | |
| parent | 3d5a96582303e28c48699f3faaf920ef7d43e6f2 (diff) | |
| download | olio-linux-3.10-0b824f8dad9fdfc7c1bf9c1d3ac744075eb73ec6.tar.xz olio-linux-3.10-0b824f8dad9fdfc7c1bf9c1d3ac744075eb73ec6.zip | |
Merge remote-tracking branch 'arm-soc/clksrc/cleanup' into sunxi/core-for-3.10
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 594bda9dcfc..32a6c576495 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; } |