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| author | Sifan Naeem <sifan.naeem@imgtec.com> | 2015-07-29 12:55:26 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-08-04 19:46:54 +0200 |
| commit | b03ba9e314c12b2127243145b5c1f41b2408de62 (patch) | |
| tree | e909d33caf1fea825693ef42d3baec7778ea0ae6 /mm/kmemcheck.c | |
| parent | spi: img-spfi: check for timeout error before proceeding (diff) | |
| download | linux-b03ba9e314c12b2127243145b5c1f41b2408de62.tar.xz linux-b03ba9e314c12b2127243145b5c1f41b2408de62.zip | |
spi: img-spfi: fix multiple calls to request gpio
spfi_setup may be called many times by the spi framework, but
gpio_request_one can only be called once without freeing, repeatedly
calling gpio_request_one will cause an error to be thrown, which
causes the request to spi_setup to be marked as failed.
We can have a per-spi_device flag that indicates whether or not the
gpio has been requested. If the gpio has already been requested use
gpio_direction_output to set the direction of the gpio.
Fixes: 8c2c8c03cdcb ("spi: img-spfi: Control CS lines with GPIO")
Signed-off-by: Sifan Naeem <sifan.naeem@imgtec.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'mm/kmemcheck.c')
0 files changed, 0 insertions, 0 deletions