[dahdi-commits] dahdi/linux.git branch "master" updated.

[SVN commits to the DAHDI project]

branch "master" has been updated
       via  040ba6f43a3cd519c8cf4c996fb6d6ed117e0a1a (commit)
      from  e2f492595c9191ba6d556ccac1bde4c1bb892938 (commit)

Summary of changes:
 drivers/dahdi/wctc4xxp/base.c |    1 +
 1 file changed, 1 insertion(+)


- Log -----------------------------------------------------------------
commit 040ba6f43a3cd519c8cf4c996fb6d6ed117e0a1a
Author: Shaun Ruffell <sruffell at digium.com>
Date:   Tue May 28 11:52:07 2013 -0500

    wctc4xxp: Ensure the descriptors are zeroed out on start.
    
    If system conditions prevent the card from loading the firmware without
    touching all the descriptors in the ring, it's possible for
    wctc4xxp_cleanup_descriptor_ring to attempt cleanup of a command that was never
    submitted resulting in the following BUG.
    
      wctc4xxp 0000:02:0a.0: Failed to load firmware.
      BUG: unable to handle kernel paging request at c109556c
      IP: [<f9faa83e>] wctc4xxp_cleanup_descriptor_ring+0x8c/0x148 [wctc4xxp]
    
    Reported-by: Xavier Carcelle <xcarcelle at avencall.com>
    Signed-off-by: Shaun Ruffell <sruffell at digium.com>

diff --git a/drivers/dahdi/wctc4xxp/base.c b/drivers/dahdi/wctc4xxp/base.c
index c88f7d7..f8eab39 100644
--- a/drivers/dahdi/wctc4xxp/base.c
+++ b/drivers/dahdi/wctc4xxp/base.c
@@ -866,6 +866,7 @@ wctc4xxp_initialize_descriptor_ring(struct pci_dev *pdev,
 	memset(dr->desc, 0, (sizeof(*d) + dr->padding) * DRING_SIZE);
 	for (i = 0; i < DRING_SIZE; ++i) {
 		d = wctc4xxp_descriptor(dr, i);
+		memset(d, 0, sizeof(*d));
 		d->des1 = cpu_to_le32(des1);
 	}
 

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dahdi/linux.git