From: Huacai Chen Date: Wed, 12 Mar 2025 13:39:54 +0000 (+0800) Subject: ata: libata: Improve return value of atapi_check_dma() X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=725ad0283033ee52c9bc73b5ea53fb7f6d496197;p=linux.git ata: libata: Improve return value of atapi_check_dma() atapi_check_dma() allows a LLD to filter ATAPI commands, returning a status indicating whether or not it is OK to use DMA for the supplied ATAPI command. Change atapi_check_dma() to return -EOPNOTSUPP instead of 1 for an ATAPI command that is not allowed to use DMA. Signed-off-by: Huacai Chen Link: https://lore.kernel.org/r/20250312133954.6666-1-chenhuacai@loongson.cn [cassel: improve commit log] Signed-off-by: Niklas Cassel --- diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 9c4a21e5a8bb..193fc3942fd3 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4579,7 +4579,7 @@ int atapi_check_dma(struct ata_queued_cmd *qc) */ if (!(qc->dev->quirks & ATA_QUIRK_ATAPI_MOD16_DMA) && unlikely(qc->nbytes & 15)) - return 1; + return -EOPNOTSUPP; if (ap->ops->check_atapi_dma) return ap->ops->check_atapi_dma(qc);