From a1125b1e41228bc2e5b4f023004a4280282d1dab Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Wed, 7 Oct 2009 16:32:33 -0700 Subject: [PATCH] mmc: sdio: don't require CISTPL_VERS_1 to contain 4 strings 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. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: David Vrabel Tested-by: Jonathan Cameron Tested-by: Bing Zhao Cc: Roel Kluin Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/mmc/core/sdio_cis.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c index e1035c895808..f85dcd536508 100644 --- a/drivers/mmc/core/sdio_cis.c +++ b/drivers/mmc/core/sdio_cis.c @@ -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; -- 2.20.1