[PATCH 10/7] mmc_spi: fix bug introduced in patch 3/7

From: Wolfgang Mües
Date: Thu Mar 12 2009 - 10:50:02 EST


From: Wolfgang Muees <wolfgang.mues@xxxxxxxxxxxx>

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@xxxxxxxxxxxx>

---

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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