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| author |  Jiri Slaby (SUSE) <jirislaby@kernel.org>
| 2024-04-19 10:09:31 +0200 |
|---|---|---|
| committer |  Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| 2024-04-20 07:58:42 +0200 |
| commit | f70f95b485d78838ad28dbec804b986d11ad7bb0 (patch) | |
| tree | 982e6d07ec1284c867dc079e0a11cd0f014b8bfe /mm/madvise.c | |
| parent | serial: exar: fix checkpach warnings (diff) | |
| download | linux-f70f95b485d78838ad28dbec804b986d11ad7bb0.tar.gz linux-f70f95b485d78838ad28dbec804b986d11ad7bb0.tar.bz2 linux-f70f95b485d78838ad28dbec804b986d11ad7bb0.zip | |
serial: msm: check dma_map_sg() return value properly
The -next commit f8fef2fa419f (tty: msm_serial: use
dmaengine_prep_slave_sg()), switched to using dma_map_sg(). But the
return value of dma_map_sg() is special: it returns number of elements
mapped. And not a standard error value.
The commit also forgot to reset dma->tx_sg in case of this failure.
Fix both these mistakes.
Thanks to Marek who helped debugging this.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20240419080931.30949-1-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/madvise.c')
0 files changed, 0 insertions, 0 deletions