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| author | Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> | 2026-05-26 11:46:54 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2026-06-04 20:58:30 +0530 |
| commit | 5fbf3a2a3b96ef5810e6e0fbc601f82067629bc5 (patch) | |
| tree | acf43396bb86c19080a683bdc26985837f7bce82 | |
| parent | 731712403ddb39d1a76a11abf339a0615bc85de7 (diff) | |
| download | linux-5fbf3a2a3b96ef5810e6e0fbc601f82067629bc5.tar.gz linux-5fbf3a2a3b96ef5810e6e0fbc601f82067629bc5.zip | |
dmaengine: sh: rz-dmac: Fix incorrect NULL check for list_first_entry()
list_first_entry() does not return NULL when the list is empty,
making the existing NULL check invalid. Use list_first_entry_or_null()
instead.
Fixes: 21323b118c16 ("dmaengine: sh: rz-dmac: Add device_tx_status() callback")
Cc: stable@vger.kernel.org
Tested-by: John Madieu <john.madieu.xa@bp.renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260526084710.3491480-3-claudiu.beznea@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/sh/rz-dmac.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c index 9f206a33dcc6..6d80cb668957 100644 --- a/drivers/dma/sh/rz-dmac.c +++ b/drivers/dma/sh/rz-dmac.c @@ -723,8 +723,8 @@ static u32 rz_dmac_chan_get_residue(struct rz_dmac_chan *channel, u32 crla, crtb, i; /* Get current processing virtual descriptor */ - current_desc = list_first_entry(&channel->ld_active, - struct rz_dmac_desc, node); + current_desc = list_first_entry_or_null(&channel->ld_active, + struct rz_dmac_desc, node); if (!current_desc) return 0; |