usb: dwc2: Use kmem_cache_free()

Author: Amitoj Kaur Chawla <amitoj1606@gmail.com>

Here, free memory is allocated using kmem_cache_zalloc.  So, use
kmem_cache_free instead of kfree.

This is done using Coccinelle and semantic patch used
is as follows:

//
@@
expression x,E,c;
@@
 x =
\(kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\)(c,...)
 ... when != x = E
     when != &x
?-kfree(x)
+kmem_cache_free(c,x)
//

Acked-by: John Youn 
Signed-off-by: Amitoj Kaur Chawla 
Signed-off-by: Felipe Balbi

---
 drivers/usb/dwc2/hcd_ddma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/drivers/usb/dwc2/hcd_ddma.c b/drivers/usb/dwc2/hcd_ddma.c
index 2ff517a..27350d0 100644
--- a/drivers/usb/dwc2/hcd_ddma.c
+++ b/drivers/usb/dwc2/hcd_ddma.c
@@ -111,7 +111,7 @@ static int dwc2_desc_list_alloc(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh,
 		dma_unmap_single(hsotg->dev, qh->desc_list_dma,
 				 qh->desc_list_sz,
 				 DMA_FROM_DEVICE);
-		kfree(qh->desc_list);
+		kmem_cache_free(desc_cache, qh->desc_list);
 		qh->desc_list = NULL;
 		return -ENOMEM;
 	}

usb: dwc2: Use kmem_cache_free()

qlambert

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