[patch] farsync: fix support for over 30 cards

We're trying to fill a 64 bit bitmap but only the lower 30 shifts work
because the shift wraps around.

Signed-off-by: Dan Carpenter <redacted>
---
Static checker stuff.  No one actually has over 30 of these cards...  :P

diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
index 1a62318..b627132 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c

@@ -597,7 +597,7 @@ fst_q_work_item(u64 * queue, int card_index)
 	 * bottom half for the card.  Note the limitation of 64 cards.
 	 * That ought to be enough
 	 */
-	mask = 1 << card_index;
+	mask = (u64)1 << card_index;
 	*queue |= mask;
 	spin_unlock_irqrestore(&fst_work_q_lock, flags);
 }

From: Dan Carpenter <redacted>
Date: Tue, 9 Oct 2012 10:20:48 +0300

We're trying to fill a 64 bit bitmap but only the lower 30 shifts work
because the shift wraps around.

Signed-off-by: Dan Carpenter <redacted>

Applied.

Hi David,
    I'd like to update the FarSync driver for our T-Series cards in the latest Linux Kernel and I would also like to add a new driver for our FarSync Flex USB device.

Should I direct the patch to you?


Regards


Kevin Curtis
Linux Development
FarSite Communications Ltd http://www.farsite.com
Winner of The Queen's Award for Enterprise 2009
tel:  +44 1256 330461
fax:  +44 1256 854931



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On Fri, Jul 26, 2013 at 11:13:25AM +0100, Kevin Curtis wrote:

Hi David,
    I'd like to update the FarSync driver for our T-Series cards
in the latest Linux Kernel and I would also like to add a new
driver for our FarSync Flex USB device.

Should I direct the patch to you?

Read Documentation/SubmittingPatches
Use ./scripts/get_maintainer.pl to find who needs to be CC'd.

If you want, you can send your first attempt to kernel-janitors
without CC'ing Dave and netdev and we will tell you which bits of
SubmittingPatches you have missed.

regards,
dan carpenter

On 07/27/2013 05:11 AM, Dan Carpenter wrote:

On Fri, Jul 26, 2013 at 11:13:25AM +0100, Kevin Curtis wrote:

quoted

Hi David,
     I'd like to update the FarSync driver for our T-Series cards
in the latest Linux Kernel and I would also like to add a new
driver for our FarSync Flex USB device.

Should I direct the patch to you?

Read Documentation/SubmittingPatches
Use ./scripts/get_maintainer.pl to find who needs to be CC'd.

you can also go through

Write and Submit your first Linux kernel Patch - Greg KH https://www.youtube.com/watch?v=LLBrBBImJt4
Why I dont want your code - Greg KH https://www.youtube.com/watch?v=fMeH7wqOwXA

helped me a lot.

//govind