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authorMarc Kleine-Budde <mkl@pengutronix.de>2010-06-21 09:27:05 +0200
committerBen Dooks <ben-linux@fluff.org>2010-10-18 01:29:04 +0100
commite39428d53d080ad2615b772d7f99d2a70c2aaab2 (patch)
treeb6f1ad2bccdaf5576597797a6fdeb97e9f9be3b6 /crypto/api.c
parentc5b4afec8e669bbe265daea24037fccfc42c4fe3 (diff)
i2c-imx: do not allow interruptions when waiting for I2C to complete
The i2c_imx_trx_complete() function is using wait_event_interruptible_timeout() to wait for the I2C controller to signal that it has completed an I2C bus operation. If the process that causes the I2C operation receives a signal, the wait will be interrupted, returning an error. It is better to let the I2C operation finished before handling the signal (i.e. returning into userspace). It is safe to use wait_event_timeout() instead, because the timeout will allow the process to exit if the I2C bus hangs. It's also better to allow the I2C operation to finish, because unacknowledged I2C operations can cause the I2C bus to hang. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'crypto/api.c')
0 files changed, 0 insertions, 0 deletions