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drivers/rapidio/devices/rio_mport_cdev.c: fix resource leak in error handling path in 'rio_dma_transfer()'

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If 'dma_map_sg()', we should branch to the existing error handling path
to free some resources before returning.

Link: http://lkml.kernel.org/r/61292a4f369229eee03394247385e955027283f8.1505687047.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <[email protected]>
Reviewed-by: Logan Gunthorpe <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: Alexandre Bounine <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Jesper Nilsson <[email protected]>
Cc: Christian K_nig <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christophe JAILLET 2017-11-17 15:37:57 -08:00 • committed by Linus Torvalds
commit b1402dcb56
1 changed files with 2 additions and 1 deletions
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3
drivers/rapidio/devices/rio_mport_cdev.c
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@ -963,7 +963,8 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode,
req->sgt.sgl, req->sgt.nents, dir);
if (nents == -EFAULT) {
rmcd_error("Failed to map SG list");
return -EFAULT;
ret = -EFAULT;
goto err_pg;
}
ret = do_dma_request(req, xfer, sync, nents);