From: Martyn Welch <martyn@welchs.me.uk>
Date: Tue, 24 Oct 2017 06:27:40 +0000 (+0200)
Subject: VME: Return -EBUSY when DMA list in use
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f13d1a8a801dae552ef495c84a223280586a9f67;p=openwrt%2Fstaging%2Fblogic.git

VME: Return -EBUSY when DMA list in use

The VME subsystem currently returns -EBUSY when trying to free a DMA
resource that is busy, but returns -EINVAL when trying to free a DMA list
that is in use. Switch to returning -EBUSY when trying to free a DMA list
that is in use for consistency and correctness.

Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/vme/vme.c b/drivers/vme/vme.c
index d0ce50d56019..81246221a13b 100644
--- a/drivers/vme/vme.c
+++ b/drivers/vme/vme.c
@@ -1194,7 +1194,7 @@ int vme_dma_list_free(struct vme_dma_list *list)
 
 	if (!mutex_trylock(&list->mtx)) {
 		printk(KERN_ERR "Link List in use\n");
-		return -EINVAL;
+		return -EBUSY;
 	}
 
 	/*