From 333031011c8fcd3020caef41128f9687725c462c Mon Sep 17 00:00:00 2001 From: Siddharth Vadapalli Date: Tue, 20 Feb 2024 15:34:51 +0530 Subject: [PATCH] dma: ti: k3-udma: Fix error handling for setup_resources() in udma_probe() In udma_probe() the return value of setup_resources() is stored in the u32 "ch_count" member of "struct udma_dev", due to which any negative return value which indicates an error is masked. Fix this by storing the return value of setup_resources() in the already declared integer variable "ret", followed by assigning it to the "ch_count" member of "struct udma_dev" in case of no error. While at it, change the "return ret" at the end of udma_probe() to a "return 0", to explicitly indicate that probe was successful. Fixes: a8837cf43839 ("dma: ti: k3-udma: Query DMA channels allocated from Resource Manager") Signed-off-by: Siddharth Vadapalli Reviewed-by: Dan Carpenter --- drivers/dma/ti/k3-udma.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index eea9ec9659..ed0a9bf487 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -1770,9 +1770,11 @@ static int udma_probe(struct udevice *dev) return PTR_ERR(ud->ringacc); ud->dev = dev; - ud->ch_count = setup_resources(ud); - if (ud->ch_count <= 0) - return ud->ch_count; + ret = setup_resources(ud); + if (ret < 0) + return ret; + + ud->ch_count = ret; for (i = 0; i < ud->bchan_cnt; i++) { struct udma_bchan *bchan = &ud->bchans[i]; @@ -1831,7 +1833,7 @@ static int udma_probe(struct udevice *dev) uc_priv->supported = DMA_SUPPORTS_MEM_TO_MEM | DMA_SUPPORTS_MEM_TO_DEV; - return ret; + return 0; } static int udma_push_to_ring(struct k3_nav_ring *ring, void *elem) -- 2.39.5