diff options
| author | Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> | 2008-04-28 02:14:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:34 -0700 |
| commit | d72cbed0c486e3db8b56380635f8e845073ce63a (patch) | |
| tree | 8739c1078f970a2acdb24fd3f2b94c68c89dd3b5 /drivers/gpio | |
| parent | 438d8908b379b6322fc3b28d45c9ebdddf58bc20 (diff) | |
| download | blackbird-obmc-linux-d72cbed0c486e3db8b56380635f8e845073ce63a.tar.gz blackbird-obmc-linux-d72cbed0c486e3db8b56380635f8e845073ce63a.zip | |
gpiolib: i2c/spi drivers: handle rmmod better
Use the newly introduced owner field in struct gpio_chip to protect the
current (small) set of non-SOC GPIO drivers from being unloaded while any of
their GPIOs are in use.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
[ add mcp23s08 and pcf857x ]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/mcp23s08.c | 1 | ||||
| -rw-r--r-- | drivers/gpio/pca953x.c | 1 | ||||
| -rw-r--r-- | drivers/gpio/pcf857x.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpio/mcp23s08.c b/drivers/gpio/mcp23s08.c index bb60e8c1a1f0..7fb5b9d009d4 100644 --- a/drivers/gpio/mcp23s08.c +++ b/drivers/gpio/mcp23s08.c @@ -239,6 +239,7 @@ static int mcp23s08_probe(struct spi_device *spi) mcp->chip.base = pdata->base; mcp->chip.ngpio = 8; mcp->chip.can_sleep = 1; + mcp->chip.owner = THIS_MODULE; spi_set_drvdata(spi, mcp); diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c index 6e72fd31184d..e0e0af536108 100644 --- a/drivers/gpio/pca953x.c +++ b/drivers/gpio/pca953x.c @@ -189,6 +189,7 @@ static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios) gc->base = chip->gpio_start; gc->ngpio = gpios; gc->label = chip->client->name; + gc->owner = THIS_MODULE; } static int __devinit pca953x_probe(struct i2c_client *client) diff --git a/drivers/gpio/pcf857x.c b/drivers/gpio/pcf857x.c index c6b3b5378384..1106aa15ac79 100644 --- a/drivers/gpio/pcf857x.c +++ b/drivers/gpio/pcf857x.c @@ -159,6 +159,7 @@ static int pcf857x_probe(struct i2c_client *client) gpio->chip.base = pdata->gpio_base; gpio->chip.can_sleep = 1; + gpio->chip.owner = THIS_MODULE; /* NOTE: the OnSemi jlc1562b is also largely compatible with * these parts, notably for output. It has a low-resolution |
