From: Robert Jarzmik <robert.jarzmik@free.fr>
To: barebox@lists.infradead.org
Subject: [PATCH] drivers/mtd: improve docg3 write speed
Date: Sun, 11 Mar 2012 12:07:06 +0100 [thread overview]
Message-ID: <1331464026-11639-1-git-send-email-robert.jarzmik@free.fr> (raw)
When programming or erasing a page, don't wait
systematically for 3s, but finish the operation as soon as
the hardware has finished, and timeout if 3 seconds have
passed.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
drivers/mtd/devices/docg3.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 88d707c..7a40908 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -21,6 +21,7 @@
#include <driver.h>
#include <errno.h>
#include <malloc.h>
+#include <clock.h>
#include <io.h>
#include <linux/kernel.h>
#include <linux/mtd/mtd.h>
@@ -780,9 +781,9 @@ static int doc_get_op_status(struct docg3 *docg3)
static int doc_write_erase_wait_status(struct docg3 *docg3)
{
int status, ret = 0;
+ uint64_t start = get_time_ns();
- if (!doc_is_ready(docg3))
- mdelay(3000);
+ while (!is_timeout(start, 3000 * MSECOND) && !doc_is_ready(docg3));
if (!doc_is_ready(docg3)) {
doc_dbg("Timeout reached and the chip is still not ready\n");
ret = -EAGAIN;
--
1.7.5.4
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next reply other threads:[~2012-03-11 11:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-11 11:07 Robert Jarzmik [this message]
2012-03-13 12:25 ` Sascha Hauer
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