diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-07-23 09:27:21 +0300 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-07-23 09:27:32 +0300 |
| commit | 4fcdc2d1b0c615331eb68b50da8e499223fac724 (patch) | |
| tree | 323726e9c52c61950fdd64c1e2bb461f983b3b6e /drivers/fsi | |
| parent | 6a794a27daca9c5a39de13c03b0748bb2d4a7a70 (diff) | |
| download | linux-4fcdc2d1b0c615331eb68b50da8e499223fac724.tar.xz | |
fsi: sbefifo: Fix inconsistent use of ffdc mutex
Some of the exit path missed the unlock. Move the mutex to
an outer function to avoid the problem completely
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/fsi')
| -rw-r--r-- | drivers/fsi/fsi-sbefifo.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/fsi/fsi-sbefifo.c b/drivers/fsi/fsi-sbefifo.c index 6b31cc24fb0d..33a5d9a43a07 100644 --- a/drivers/fsi/fsi-sbefifo.c +++ b/drivers/fsi/fsi-sbefifo.c @@ -136,16 +136,14 @@ struct sbefifo_user { static DEFINE_IDA(sbefifo_ida); static DEFINE_MUTEX(sbefifo_ffdc_mutex); - -static void sbefifo_dump_ffdc(struct device *dev, const __be32 *ffdc, - size_t ffdc_sz, bool internal) +static void __sbefifo_dump_ffdc(struct device *dev, const __be32 *ffdc, + size_t ffdc_sz, bool internal) { int pack = 0; #define FFDC_LSIZE 60 static char ffdc_line[FFDC_LSIZE]; char *p = ffdc_line; - mutex_lock(&sbefifo_ffdc_mutex); while (ffdc_sz) { u32 w0, w1, w2, i; if (ffdc_sz < 3) { @@ -194,6 +192,13 @@ static void sbefifo_dump_ffdc(struct device *dev, const __be32 *ffdc, } dev_warn(dev, "+-------------------------------------------+\n"); } +} + +static void sbefifo_dump_ffdc(struct device *dev, const __be32 *ffdc, + size_t ffdc_sz, bool internal) +{ + mutex_lock(&sbefifo_ffdc_mutex); + __sbefifo_dump_ffdc(dev, ffdc, ffdc_sz, internal); mutex_unlock(&sbefifo_ffdc_mutex); } |