Subject: + dmi-add-support-for-exact-dmi-matches-in-addition-to-substring-matching.patch added to -mm tree To: jani.nikula@xxxxxxxxx,annndddrr@xxxxxxxxx,chris@xxxxxxxxxxxxxxxxxx,cpanceac@xxxxxxxxx,daniel.vetter@xxxxxxxx,greg@xxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Thu, 13 Jun 2013 12:55:50 -0700 The patch titled Subject: dmi: add support for exact DMI matches in addition to substring matching has been added to the -mm tree. Its filename is dmi-add-support-for-exact-dmi-matches-in-addition-to-substring-matching.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Jani Nikula <jani.nikula@xxxxxxxxx> Subject: dmi: add support for exact DMI matches in addition to substring matching dmi_match() considers a substring match to be a successful match. This is not always sufficient to distinguish between DMI data for different systems. Add support for exact string matching using strcmp() in addition to the substring matching using strstr(). The specific use case in the i915 driver is to allow us to use an exact match for D510MO, without also incorrectly matching D510MOV: { .ident = "Intel D510MO", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Intel"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "D510MO"), }, } Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Cc: <annndddrr@xxxxxxxxx> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: Cornel Panceac <cpanceac@xxxxxxxxx> Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx> Cc: Greg KH <greg@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/firmware/dmi_scan.c | 12 +++++++++--- include/linux/mod_devicetable.h | 6 ++++-- 2 files changed, 13 insertions(+), 5 deletions(-) diff -puN drivers/firmware/dmi_scan.c~dmi-add-support-for-exact-dmi-matches-in-addition-to-substring-matching drivers/firmware/dmi_scan.c --- a/drivers/firmware/dmi_scan.c~dmi-add-support-for-exact-dmi-matches-in-addition-to-substring-matching +++ a/drivers/firmware/dmi_scan.c @@ -551,9 +551,15 @@ static bool dmi_matches(const struct dmi int s = dmi->matches[i].slot; if (s == DMI_NONE) break; - if (dmi_ident[s] - && strstr(dmi_ident[s], dmi->matches[i].substr)) - continue; + if (dmi_ident[s]) { + if (!dmi->matches[i].exact_match && + strstr(dmi_ident[s], dmi->matches[i].substr)) + continue; + else if (dmi->matches[i].exact_match && + !strcmp(dmi_ident[s], dmi->matches[i].substr)) + continue; + } + /* No match */ return false; } diff -puN include/linux/mod_devicetable.h~dmi-add-support-for-exact-dmi-matches-in-addition-to-substring-matching include/linux/mod_devicetable.h --- a/include/linux/mod_devicetable.h~dmi-add-support-for-exact-dmi-matches-in-addition-to-substring-matching +++ a/include/linux/mod_devicetable.h @@ -456,7 +456,8 @@ enum dmi_field { }; struct dmi_strmatch { - unsigned char slot; + unsigned char slot:7; + unsigned char exact_match:1; char substr[79]; }; @@ -474,7 +475,8 @@ struct dmi_system_id { */ #define dmi_device_id dmi_system_id -#define DMI_MATCH(a, b) { a, b } +#define DMI_MATCH(a, b) { .slot = a, .substr = b } +#define DMI_EXACT_MATCH(a, b) { .slot = a, .substr = b, .exact_match = 1 } #define PLATFORM_NAME_SIZE 20 #define PLATFORM_MODULE_PREFIX "platform:" _ Patches currently in -mm which might be from jani.nikula@xxxxxxxxx are linux-next.patch dmi-add-support-for-exact-dmi-matches-in-addition-to-substring-matching.patch drm-i915-quirk-away-phantom-lvds-on-intels-d510mo-mainboard.patch drm-i915-quirk-away-phantom-lvds-on-intels-d525mw-mainboard.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html