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Message-Id: <5503818e35ad1011d613661ade15f72fd2945213.1369313543.git.michal.simek@xilinx.com>
Date: Thu, 23 May 2013 14:52:34 +0200
From: Michal Simek <michal.simek@...inx.com>
To: linux-kernel@...r.kernel.org
Cc: Michal Simek <monstr@...str.eu>,
Michal Simek <michal.simek@...inx.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 2/2] char: xilinx_hwicap: Fix typo in comment and extend it
From: Michal Simek <monstr@...str.eu>
s/regsiter/register/
Use origin comment from the first driver version
which also explain the usage of XHI_MAX_RETRIES better.
Signed-off-by: Michal Simek <monstr@...str.eu>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---
drivers/char/xilinx_hwicap/xilinx_hwicap.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.h b/drivers/char/xilinx_hwicap/xilinx_hwicap.h
index 96677fc..38b145e 100644
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.h
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.h
@@ -85,7 +85,13 @@ struct hwicap_driver_config {
void (*reset)(struct hwicap_drvdata *drvdata);
};
-/* Number of times to poll the done regsiter */
+/* Number of times to poll the done register. This has to be large
+ * enough to allow an entire configuration to complete. If an entire
+ * page (4kb) is configured at once, that could take up to 4k cycles
+ * with a byte-wide icap interface. In most cases, this driver is
+ * used with a much smaller fifo, but this should be sufficient in the
+ * worst case.
+ */
#define XHI_MAX_RETRIES 5000
/************ Constant Definitions *************/
--
1.8.2.3
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