diff options
| author | Radu Pirea <radu.pirea@microchip.com> | 2017-12-15 17:40:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-03 10:19:42 +0100 |
| commit | 4c963a35f66fc03d8fceceecd261333629a4233a (patch) | |
| tree | 92854331dc3fe8c004282d6baa4c6bb6c4b44b77 /drivers/spi/spi-mxs.c | |
| parent | ef7f640966e5c5d9c6acbe0e20a99e5001020b1f (diff) | |
spi: atmel: fixed spin_lock usage inside atmel_spi_remove
[ Upstream commit 66e900a3d225575c8b48b59ae1fe74bb6e5a65cc ]
The only part of atmel_spi_remove which needs to be atomic is hardware
reset.
atmel_spi_stop_dma calls dma_terminate_all and this needs interrupts
enabled.
atmel_spi_release_dma calls dma_release_channel and dma_release_channel
locks a mutex inside of spin_lock.
So the call of these functions can't be inside a spin_lock.
Reported-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Radu Pirea <radu.pirea@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/spi/spi-mxs.c')
0 files changed, 0 insertions, 0 deletions