linux-kernel - [PATCH 6/7] staging: slicoss: fix 64-bit isr address bug

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Message-Id: <1399348957-16663-7-git-send-email-dmatlack@google.com>
Date:	Mon,  5 May 2014 21:02:36 -0700
From:	David Matlack <dmatlack@...gle.com>
To:	gregkh@...uxfoundation.org
Cc:	liodot@...il.com, charrer@...critech.com,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	David Matlack <dmatlack@...gle.com>
Subject: [PATCH 6/7] staging: slicoss: fix 64-bit isr address bug

This patch fixes a bug that only manifests when the physical address of
the interrupt status register is >4GB. Specifically, the driver was only
telling the device about the lower 32 bits of the ISR. This patch adds
the upper 32 bits.

Signed-off-by: David Matlack <dmatlack@...gle.com>
---
 drivers/staging/slicoss/slicoss.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/slicoss/slicoss.c b/drivers/staging/slicoss/slicoss.c
index 01401e0..55afe0d 100644
--- a/drivers/staging/slicoss/slicoss.c
+++ b/drivers/staging/slicoss/slicoss.c
@@ -2815,7 +2815,8 @@ static int slic_card_init(struct sliccard *card, struct adapter *adapter)
 
 		spin_lock_irqsave(&adapter->bit64reglock.lock,
 					adapter->bit64reglock.flags);
-		slic_reg32_write(&slic_regs->slic_addr_upper, 0, DONT_FLUSH);
+		slic_reg32_write(&slic_regs->slic_addr_upper,
+				 SLIC_GET_ADDR_HIGH(&pshmem->isr), DONT_FLUSH);
 		slic_reg32_write(&slic_regs->slic_isp,
 				 SLIC_GET_ADDR_LOW(&pshmem->isr), FLUSH);
 		spin_unlock_irqrestore(&adapter->bit64reglock.lock,
-- 
1.9.2

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