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mmc: sdio: don't require CISTPL_VERS_1 to contain 4 strings

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The PC Card 8.0 specification (vol.  4, section 3.2.10) says the
TPLLV1_INFO field of the CISTPL_VERS_1 tuple must contain 4 strings.  Some
cards don't have all 4 so just parse as many as we can.

[[email protected]: coding-style fixes]
Signed-off-by: David Vrabel <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Tested-by: Bing Zhao <[email protected]>
Cc: Roel Kluin <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
David Vrabel 2009-10-07 16:32:33 -07:00 • committed by Linus Torvalds
commit a1125b1e41
1 changed files with 3 additions and 4 deletions
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7
drivers/mmc/core/sdio_cis.c
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@ -29,6 +29,8 @@ static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
unsigned i, nr_strings;
char **buffer, *string;
/* Find all null-terminated (including zero length) strings in
the TPLLV1_INFO field. Trailing garbage is ignored. */
buf += 2;
size -= 2;
@ -39,11 +41,8 @@ static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
if (buf[i] == 0)
nr_strings++;
}
if (nr_strings < 4) {
printk(KERN_WARNING "SDIO: ignoring broken CISTPL_VERS_1\n");
if (nr_strings == 0)
return 0;
}
size = i;