staging: mt7621-mmc: Only unmap_sg if mapped

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A failure while processing the start command could cause dma_unmap_sg()
to be called without first calling dma_map_sg().

Since calling dma_unmap_sg() is only needed when data != NULL, move the
unmap call into the corresponding if {} block.

Signed-off-by: George Hilliard <thirtythreeforty@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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George Hilliard 2019-03-18 20:20:12 -06:00 • committed by Greg Kroah-Hartman

parent b22f49923a

commit b8585eb51e

1 changed files with 4 additions and 5 deletions

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drivers/staging/mt7621-mmc/sd.c

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