From: Dan Carpenter Date: Tue, 23 Apr 2024 16:15:22 +0000 (+0300) Subject: net: ti: icssg-prueth: Fix signedness bug in prueth_init_rx_chns() X-Git-Tag: v6.10-rc5-pxa1908~515^2~10 X-Git-Url: https://git.dujemihanovic.xyz/?a=commitdiff_plain;h=4dcd0e83ea1d1df9b2e0174a6d3e795b3477d64e;p=linux.git net: ti: icssg-prueth: Fix signedness bug in prueth_init_rx_chns() The rx_chn->irq[] array is unsigned int but it should be signed for the error handling to work. Also if k3_udma_glue_rx_get_irq() returns zero then we should return -ENXIO instead of success. Fixes: 128d5874c082 ("net: ti: icssg-prueth: Add ICSSG ethernet driver") Signed-off-by: Dan Carpenter Reviewed-by: Roger Quadros Reviewed-by: MD Danish Anwar Link: https://lore.kernel.org/r/05282415-e7f4-42f3-99f8-32fde8f30936@moroto.mountain Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index cf7b73f8f450..b69af69a1ccd 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -421,12 +421,14 @@ static int prueth_init_rx_chns(struct prueth_emac *emac, if (!i) fdqring_id = k3_udma_glue_rx_flow_get_fdq_id(rx_chn->rx_chn, i); - rx_chn->irq[i] = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i); - if (rx_chn->irq[i] <= 0) { - ret = rx_chn->irq[i]; + ret = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i); + if (ret <= 0) { + if (!ret) + ret = -ENXIO; netdev_err(ndev, "Failed to get rx dma irq"); goto fail; } + rx_chn->irq[i] = ret; } return 0;