From: Christoph Hellwig <hch@lst.de> stable inclusion from stable-v5.10.94 commit 0df51040089dd5a9dfd9e3f902becbf9740c582a bugzilla: https://gitee.com/openeuler/kernel/issues/I531X9 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit d94d94969a4ba07a43d62429c60372320519c391 ] The allocated buffers are used as a command payload, for which the block layer and/or DMA API do the proper bounce buffering if needed. Link: https://lore.kernel.org/r/20211222090842.920724-1-hch@lst.de Reported-by: Baoquan He <bhe@redhat.com> Reviewed-by: Baoquan He <bhe@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> Acked-by: Xie XiuQi <xiexiuqi@huawei.com> --- drivers/scsi/sr.c | 2 +- drivers/scsi/sr_vendor.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 4cb4ab9c6137..464418413ced 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -917,7 +917,7 @@ static void get_capabilities(struct scsi_cd *cd) /* allocate transfer buffer */ - buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); + buffer = kmalloc(512, GFP_KERNEL); if (!buffer) { sr_printk(KERN_ERR, cd, "out of memory.\n"); return; diff --git a/drivers/scsi/sr_vendor.c b/drivers/scsi/sr_vendor.c index 1f988a1b9166..a61635326ae0 100644 --- a/drivers/scsi/sr_vendor.c +++ b/drivers/scsi/sr_vendor.c @@ -131,7 +131,7 @@ int sr_set_blocklength(Scsi_CD *cd, int blocklength) if (cd->vendor == VENDOR_TOSHIBA) density = (blocklength > 2048) ? 0x81 : 0x83; - buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); + buffer = kmalloc(512, GFP_KERNEL); if (!buffer) return -ENOMEM; @@ -179,7 +179,7 @@ int sr_cd_check(struct cdrom_device_info *cdi) if (cd->cdi.mask & CDC_MULTI_SESSION) return 0; - buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); + buffer = kmalloc(512, GFP_KERNEL); if (!buffer) return -ENOMEM; -- 2.20.1