[PATCH -next] scsi: Remove unneeded cast from memory allocation

[PATCH -next] scsi: Remove unneeded cast from memory allocation

[Li Heng]

Remove casting the values returned by memory allocation function.

Coccinelle emits WARNING:

./drivers/message/fusion/mptctl.c:2596:14-31: WARNING: casting value returned by memory allocation function to (SCSIDevicePage0_t *) is useless.
./drivers/message/fusion/mptctl.c:2660:15-32: WARNING: casting value returned by memory allocation function to (SCSIDevicePage3_t *) is useless.

Signed-off-by: Li Heng <liheng40@huawei.com>
---
 drivers/message/fusion/mptctl.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index 1074b88..dbf5255 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -2455,7 +2455,7 @@ mptctl_hp_hostinfo(MPT_ADAPTER *ioc, unsigned long arg, unsigned int data_size)
 		}
 	}
 
-	/* 
+	/*
 	 * Gather ISTWI(Industry Standard Two Wire Interface) Data
 	 */
 	if ((mf = mpt_get_msg_frame(mptctl_id, ioc)) == NULL) {
@@ -2593,7 +2593,7 @@ mptctl_hp_targetinfo(MPT_ADAPTER *ioc, unsigned long arg)
        /* Get the data transfer speeds
         */
 	data_sz = ioc->spi_data.sdp0length * 4;
-	pg0_alloc = (SCSIDevicePage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page_dma);
+	pg0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz, &page_dma);
 	if (pg0_alloc) {
 		hdr.PageVersion = ioc->spi_data.sdp0version;
 		hdr.PageLength = data_sz;
@@ -2657,8 +2657,7 @@ mptctl_hp_targetinfo(MPT_ADAPTER *ioc, unsigned long arg)
 		/* Issue the second config page request */
 		cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
 		data_sz = (int) cfg.cfghdr.hdr->PageLength * 4;
-		pg3_alloc = (SCSIDevicePage3_t *) pci_alloc_consistent(
-							ioc->pcidev, data_sz, &page_dma);
+		pg3_alloc = pci_alloc_consistent(ioc->pcidev, data_sz, &page_dma);
 		if (pg3_alloc) {
 			cfg.physAddr = page_dma;
 			cfg.pageAddr = (karg.hdr.channel << 8) | karg.hdr.id;
-- 
2.7.4

Re: [PATCH -next] scsi: Remove unneeded cast from memory allocation

[Martin K. Petersen]

On Wed, 29 Jul 2020 17:19:50 +0800, Li Heng wrote:

> Remove casting the values returned by memory allocation function.
> 
> Coccinelle emits WARNING:
> 
> ./drivers/message/fusion/mptctl.c:2596:14-31: WARNING: casting value returned by memory allocation function to (SCSIDevicePage0_t *) is useless.
> ./drivers/message/fusion/mptctl.c:2660:15-32: WARNING: casting value returned by memory allocation function to (SCSIDevicePage3_t *) is useless.

Applied to 5.10/scsi-queue, thanks!

[1/1] scsi: mptctl: Remove unneeded cast from memory allocation
      https://git.kernel.org/mkp/scsi/c/8fee79ed8ea2

-- 
Martin K. Petersen	Oracle Linux Engineering

[PATCH -next] scsi: Remove unneeded cast from memory allocation

[Li Heng]

Remove casting the values returned by memory allocation function.

Coccinelle emits WARNING:

./drivers/message/fusion/mptfc.c:766:17-30: WARNING: casting value returned by memory allocation function to (FCPortPage0_t *) is useless.
./drivers/message/fusion/mptfc.c:907:17-30: WARNING: casting value returned by memory allocation function to (FCPortPage1_t *) is useless.

Signed-off-by: Li Heng <liheng40@huawei.com>
---
 drivers/message/fusion/mptfc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c
index 4314a33..34ca9af 100644
--- a/drivers/message/fusion/mptfc.c
+++ b/drivers/message/fusion/mptfc.c
@@ -763,7 +763,7 @@ mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
 
 	data_sz = hdr.PageLength * 4;
 	rc = -ENOMEM;
-	ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
+	ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
 	if (ppage0_alloc) {
 
  try_again:
@@ -904,7 +904,7 @@ mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
 		if (data_sz < sizeof(FCPortPage1_t))
 			data_sz = sizeof(FCPortPage1_t);
 
-		page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
+		page1_alloc = pci_alloc_consistent(ioc->pcidev,
 						data_sz,
 						&page1_dma);
 		if (!page1_alloc)
-- 
2.7.4