diff mbox

crypto: bfin_crc: Simplify use of devm_ioremap_resource

Message ID 20160704130021.GA16839@amitoj-Inspiron-3542 (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show

Commit Message

Amitoj Kaur Chawla July 4, 2016, 1 p.m. UTC
Remove unneeded error handling on the result of a call to
platform_get_resource when the value is passed to
devm_ioremap_resource.

The Coccinelle semantic patch that makes this change is as follows:

// <smpl>
@@
expression pdev,res,n,e,e1;
expression ret != 0;
identifier l;
@@

- res = platform_get_resource(pdev, IORESOURCE_MEM, n);
  ... when != res
- if (res == NULL) { ... \(goto l;\|return ret;\) }
  ... when != res
+ res = platform_get_resource(pdev, IORESOURCE_MEM, n);
  e = devm_ioremap_resource(e1, res);
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
---
 drivers/crypto/bfin_crc.c | 5 -----
 1 file changed, 5 deletions(-)

Comments

Herbert Xu July 5, 2016, 3:15 p.m. UTC | #1
On Mon, Jul 04, 2016 at 06:30:21PM +0530, Amitoj Kaur Chawla wrote:
> Remove unneeded error handling on the result of a call to
> platform_get_resource when the value is passed to
> devm_ioremap_resource.
> 
> The Coccinelle semantic patch that makes this change is as follows:
> 
> // <smpl>
> @@
> expression pdev,res,n,e,e1;
> expression ret != 0;
> identifier l;
> @@
> 
> - res = platform_get_resource(pdev, IORESOURCE_MEM, n);
>   ... when != res
> - if (res == NULL) { ... \(goto l;\|return ret;\) }
>   ... when != res
> + res = platform_get_resource(pdev, IORESOURCE_MEM, n);
>   e = devm_ioremap_resource(e1, res);
> // </smpl>
> 
> Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>

Patch applied.  Thanks.
diff mbox

Patch

diff --git a/drivers/crypto/bfin_crc.c b/drivers/crypto/bfin_crc.c
index 95b7396..10db7df 100644
--- a/drivers/crypto/bfin_crc.c
+++ b/drivers/crypto/bfin_crc.c
@@ -588,11 +588,6 @@  static int bfin_crypto_crc_probe(struct platform_device *pdev)
 	crypto_init_queue(&crc->queue, CRC_CCRYPTO_QUEUE_LENGTH);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (res == NULL) {
-		dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
-		return -ENOENT;
-	}
-
 	crc->regs = devm_ioremap_resource(dev, res);
 	if (IS_ERR((void *)crc->regs)) {
 		dev_err(&pdev->dev, "Cannot map CRC IO\n");