Re: [PATCH] scsi/mpt3sas: Use dma_pool_zalloc

Souptick Joarder
2018-10-08T16:28:42Z

On Tue, Oct 2, 2018 at 11:14 AM Souptick Joarder <jrdr.linux@gmail.com> wrote:
>
> Replaced dma_pool_alloc + memset with dma_pool_zalloc.
>
> Signed-off-by: Brajeswar Ghosh <brajeswar.linux@gmail.com>
> Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>

Any comment on this patch ?
> ---
> drivers/scsi/mpt3sas/mpt3sas_base.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
> index 59d7844..d7ef671 100644
> --- a/drivers/scsi/mpt3sas/mpt3sas_base.c
> +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
> @@ -4516,7 +4516,7 @@ void mpt3sas_base_clear_st(struct MPT3SAS_ADAPTER *ioc,
> i = 0;
> do {
> ioc->reply_post[i].reply_post_free =
> - dma_pool_alloc(ioc->reply_post_free_dma_pool,
> + dma_pool_zalloc(ioc->reply_post_free_dma_pool,
> GFP_KERNEL,
> &ioc->reply_post[i].reply_post_free_dma);
> if (!ioc->reply_post[i].reply_post_free) {
> @@ -4525,7 +4525,6 @@ void mpt3sas_base_clear_st(struct MPT3SAS_ADAPTER *ioc,
> ioc->name);
> goto out;
> }
> - memset(ioc->reply_post[i].reply_post_free, 0, sz);
> dinitprintk(ioc, pr_info(MPT3SAS_FMT
> "reply post free pool (0x%p): depth(%d),"
> "element_size(%d), pool_size(%d kB)\n", ioc->name,
> @@ -4852,14 +4851,13 @@ void mpt3sas_base_clear_st(struct MPT3SAS_ADAPTER *ioc,
> ioc->name);
> goto out;
> }
> - ioc->reply_free = dma_pool_alloc(ioc->reply_free_dma_pool, GFP_KERNEL,
> + ioc->reply_free = dma_pool_zalloc(ioc->reply_free_dma_pool, GFP_KERNEL,
> &ioc->reply_free_dma);
> if (!ioc->reply_free) {
> pr_err(MPT3SAS_FMT "reply_free pool: dma_pool_alloc failed\n",
> ioc->name);
> goto out;
> }
> - memset(ioc->reply_free, 0, sz);
> dinitprintk(ioc, pr_info(MPT3SAS_FMT "reply_free pool(0x%p): " \
> "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
> ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
> --
> 1.9.1
>