In commit af7ddd8a627c ("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"), dma_alloc_coherent has already zeroed the memory. So memset is not needed. Signed-off-by: Fuqian Huang <huangfq.daxian@xxxxxxxxx> --- drivers/scsi/3w-9xxx.c | 2 -- drivers/scsi/3w-xxxx.c | 2 -- 2 files changed, 4 deletions(-) diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c index 3337b1e80412..da17d9104e6b 100644 --- a/drivers/scsi/3w-9xxx.c +++ b/drivers/scsi/3w-9xxx.c @@ -534,8 +534,6 @@ static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) goto out; } - memset(cpu_addr, 0, size*TW_Q_LENGTH); - for (i = 0; i < TW_Q_LENGTH; i++) { switch(which) { case 0: diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index 2b1e0d503020..26703ef52a2e 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -848,8 +848,6 @@ static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) return 1; } - memset(cpu_addr, 0, size*TW_Q_LENGTH); - for (i=0;i<TW_Q_LENGTH;i++) { switch(which) { case 0: -- 2.11.0