From: "Wolfgang Mües" <wolfgang.mues@auerswald.de>
To: Pierre Ossman <drzeus@drzeus.cx>
Cc: "Andrew Morton" <akpm@linux-foundation.org>,
"Matt Fleming" <matt@console-pimps.org>,
"David Brownell" <dbrownell@users.sourceforge.net>,
"Mike Frysinger" <vapier.adi@gmail.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 10/7] mmc_spi: fix bug introduced in patch 3/7
Date: Thu, 12 Mar 2009 15:49:37 +0100 [thread overview]
Message-ID: <200903121549.37620.wolfgang.mues@auerswald.de> (raw)
From: Wolfgang Muees <wolfgang.mues@auerswald.de>
o Fix bug introduced in patch 3/7.
The first 3 bits of the data response may be undefined;
assuming that these bits are always 1 lead to unreliable
transmission.
Signed-off-by: Wolfgang Muees <wolfgang.mues@auerswald.de>
---
diff -uprN 2_6_29_rc7_patch9_speedup/drivers/mmc/host/mmc_spi.c 2_6_29_rc7_patch10_bugfix_of_patch3/drivers/mmc/host/mmc_spi.c
--- 2_6_29_rc7_patch9_speedup/drivers/mmc/host/mmc_spi.c 2009-03-12 14:35:27.000000000 +0100
+++ 2_6_29_rc7_patch10_bugfix_of_patch3/drivers/mmc/host/mmc_spi.c 2009-03-12 14:40:03.000000000 +0100
@@ -725,6 +725,9 @@ mmc_spi_writeblock(struct mmc_spi_host *
pattern |= scratch->status[2] << 8;
pattern |= scratch->status[3];
+ /* First 3 bit of pattern are undefined */
+ pattern |= 0xE0000000;
+
/* left-adjust to leading 0 bit */
while (pattern & 0x80000000)
pattern <<= 1;
---
regards
i. A. Wolfgang Mües
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next reply other threads:[~2009-03-12 14:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-12 14:49 Wolfgang Mües [this message]
2009-03-12 20:57 ` David Brownell
2009-03-15 11:48 ` Pierre Ossman
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