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| author | Roman Tereshonkov <roman.tereshonkov@nokia.com> | 2010-04-16 09:52:59 +0000 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-04-28 01:14:05 -0600 |
| commit | 8ec130a017ebd8b931344edde7013ffb18fa1965 (patch) | |
| tree | 183138a6db30ce3f002c65cae7304c27927edaa9 /drivers/spi | |
| parent | 9bd73715a1f83f640937c121d22fa8dbaab73002 (diff) | |
| download | lwn-8ec130a017ebd8b931344edde7013ffb18fa1965.tar.gz lwn-8ec130a017ebd8b931344edde7013ffb18fa1965.zip | |
spi: release device claimed by bus_find_device_by_name
In success case the function bus_find_device_by_name calls
get_device. In our context put_device should be called to
decrease the device count usage.
Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 9ffb0fdbd6fe..ec429d156a57 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -257,6 +257,7 @@ int spi_add_device(struct spi_device *spi) { static DEFINE_MUTEX(spi_add_lock); struct device *dev = spi->master->dev.parent; + struct device *d; int status; /* Chipselects are numbered 0..max; validate. */ @@ -278,10 +279,11 @@ int spi_add_device(struct spi_device *spi) */ mutex_lock(&spi_add_lock); - if (bus_find_device_by_name(&spi_bus_type, NULL, dev_name(&spi->dev)) - != NULL) { + d = bus_find_device_by_name(&spi_bus_type, NULL, dev_name(&spi->dev)); + if (d != NULL) { dev_err(dev, "chipselect %d already in use\n", spi->chip_select); + put_device(d); status = -EBUSY; goto done; } |