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| author | Axel Lin <axel.lin@ingics.com> | 2014-04-02 22:21:04 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-04-03 11:13:38 +0100 |
| commit | 0a6d38795a405c49ea0012f04173613382def58c (patch) | |
| tree | 41cca48cd41bdf3c9034b8f59ff5f4079f9bdaf2 /drivers/spi/spi-mpc512x-psc.c | |
| parent | 455c6fdbd219161bd09b1165f11699d6d73de11c (diff) | |
| download | lwn-0a6d38795a405c49ea0012f04173613382def58c.tar.gz lwn-0a6d38795a405c49ea0012f04173613382def58c.zip | |
spi: Always check complete callback before calling it
Since commit 1e25cd4729bd "spi: Do not require a completion", this checking is
required to prevent NULL pointer dereference.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/spi/spi-mpc512x-psc.c')
| -rw-r--r-- | drivers/spi/spi-mpc512x-psc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c index 5032141eeeec..8eee745e8471 100644 --- a/drivers/spi/spi-mpc512x-psc.c +++ b/drivers/spi/spi-mpc512x-psc.c @@ -301,7 +301,8 @@ static int mpc512x_psc_spi_msg_xfer(struct spi_master *master, } m->status = status; - m->complete(m->context); + if (m->complete) + m->complete(m->context); if (status || !cs_change) mpc512x_psc_spi_deactivate_cs(spi); |