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| author | Lukas Wunner <lukas@wunner.de> | 2019-02-03 09:27:00 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-02-25 08:40:58 +0100 |
| commit | e5c1e63c932379b89d7404d4e5fde1bf8abff951 (patch) | |
| tree | f56ecc6dc5d3da1c1b50e8538f48cdb07626172e /drivers/mmc | |
| parent | a6327b5e57fdc679c842588c3be046c0b39cc127 (diff) | |
| download | linux-stable-e5c1e63c932379b89d7404d4e5fde1bf8abff951.tar.gz linux-stable-e5c1e63c932379b89d7404d4e5fde1bf8abff951.tar.bz2 linux-stable-e5c1e63c932379b89d7404d4e5fde1bf8abff951.zip | |
mmc: bcm2835: Drop DMA channel error pointer check
bcm2835_add_host() invokes IS_ERR_OR_NULL() on a DMA channel pointer,
however dma_request_slave_channel() (which was used to populate the
pointer) never returns an error pointer. So a NULL pointer check is
sufficient.
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Frank Pavlic <f.pavlic@kunbus.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/bcm2835.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c index c9e7aa50bb0a..ab8d58a60352 100644 --- a/drivers/mmc/host/bcm2835.c +++ b/drivers/mmc/host/bcm2835.c @@ -1286,7 +1286,7 @@ static int bcm2835_add_host(struct bcm2835_host *host) spin_lock_init(&host->lock); mutex_init(&host->mutex); - if (IS_ERR_OR_NULL(host->dma_chan_rxtx)) { + if (!host->dma_chan_rxtx) { dev_warn(dev, "unable to initialise DMA channel. Falling back to PIO\n"); host->use_dma = false; } else { |