From 721791c72845351413c399b2caf2d76225030a93 Mon Sep 17 00:00:00 2001 From: Jonathan Marek Date: Mon, 8 Feb 2021 15:04:01 -0500 Subject: [PATCH] misc: fastrpc: fix incorrect usage of dma_map_sgtable [ Upstream commit b212658aebda82f92967bcbd4c7380d607c3d803 ] dma_map_sgtable() returns 0 on success, which is the opposite of what this code was doing. Fixes: 7cd7edb89437 ("misc: fastrpc: fix common struct sg_table related issues") Acked-by: Marek Szyprowski Signed-off-by: Jonathan Marek Link: https://lore.kernel.org/r/20210208200401.31100-1-jonathan@marek.ca Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Andrea Righi --- drivers/misc/fastrpc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 70eb5ed942d0..f12e909034ac 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -520,12 +520,13 @@ fastrpc_map_dma_buf(struct dma_buf_attachment *attachment, { struct fastrpc_dma_buf_attachment *a = attachment->priv; struct sg_table *table; + int ret; table = &a->sgt; - if (!dma_map_sgtable(attachment->dev, table, dir, 0)) - return ERR_PTR(-ENOMEM); - + ret = dma_map_sgtable(attachment->dev, table, dir, 0); + if (ret) + table = ERR_PTR(ret); return table; } -- 2.39.5