From bebe933d35a63d4f042fbf4dce4f22e689ba0fcd Mon Sep 17 00:00:00 2001 From: Geoff Levand Date: Sat, 18 Mar 2023 17:39:16 +0000 Subject: net/ps3_gelic_net: Use dma_mapping_error The current Gelic Etherenet driver was checking the return value of its dma_map_single call, and not using the dma_mapping_error() routine. Fixes runtime problems like these: DMA-API: ps3_gelic_driver sb_05: device driver failed to check map error WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:1027 .check_unmap+0x888/0x8dc Fixes: 02c1889166b4 ("ps3: gigabit ethernet driver for PS3, take3") Reviewed-by: Alexander Duyck Signed-off-by: Geoff Levand Signed-off-by: David S. Miller --- drivers/net/ethernet/toshiba/ps3_gelic_net.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/toshiba/ps3_gelic_net.c b/drivers/net/ethernet/toshiba/ps3_gelic_net.c index dffd664e65f4..9d535ae59626 100644 --- a/drivers/net/ethernet/toshiba/ps3_gelic_net.c +++ b/drivers/net/ethernet/toshiba/ps3_gelic_net.c @@ -317,15 +317,17 @@ static int gelic_card_init_chain(struct gelic_card *card, /* set up the hardware pointers in each descriptor */ for (i = 0; i < no; i++, descr++) { + dma_addr_t cpu_addr; + gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); - descr->bus_addr = - dma_map_single(ctodev(card), descr, - GELIC_DESCR_SIZE, - DMA_BIDIRECTIONAL); - if (!descr->bus_addr) + cpu_addr = dma_map_single(ctodev(card), descr, + GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); + + if (dma_mapping_error(ctodev(card), cpu_addr)) goto iommu_error; + descr->bus_addr = cpu_to_be32(cpu_addr); descr->next = descr + 1; descr->prev = descr - 1; } @@ -375,6 +377,7 @@ static int gelic_descr_prepare_rx(struct gelic_card *card, static const unsigned int rx_skb_size = ALIGN(GELIC_NET_MAX_FRAME, GELIC_NET_RXBUF_ALIGN) + GELIC_NET_RXBUF_ALIGN - 1; + dma_addr_t cpu_addr; int offset; if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) @@ -396,11 +399,10 @@ static int gelic_descr_prepare_rx(struct gelic_card *card, if (offset) skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset); /* io-mmu-map the skb */ - descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card), - descr->skb->data, - GELIC_NET_MAX_FRAME, - DMA_FROM_DEVICE)); - if (!descr->buf_addr) { + cpu_addr = dma_map_single(ctodev(card), descr->skb->data, + GELIC_NET_MAX_FRAME, DMA_FROM_DEVICE); + descr->buf_addr = cpu_to_be32(cpu_addr); + if (dma_mapping_error(ctodev(card), cpu_addr)) { dev_kfree_skb_any(descr->skb); descr->skb = NULL; dev_info(ctodev(card), @@ -780,7 +782,7 @@ static int gelic_descr_prepare_tx(struct gelic_card *card, buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); - if (!buf) { + if (dma_mapping_error(ctodev(card), buf)) { dev_err(ctodev(card), "dma map 2 failed (%p, %i). Dropping packet\n", skb->data, skb->len); -- cgit v1.2.3-59-g8ed1b