Hi all, Can these patches be accepted? My SDHCI host controller really needs these patches to use Trim/Erase feature. If anyone has concern about these patches, do please let me know and I would like to fix them. Thanks. > -----Original Message----- > From: linux-mmc-owner@xxxxxxxxxxxxxxx > [mailto:linux-mmc-owner@xxxxxxxxxxxxxxx] On Behalf Of Chuanxiao Dong > Sent: Thursday, December 02, 2010 7:25 PM > To: linux-mmc@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx; cjb@xxxxxxxxxx; arjan@xxxxxxxxxxxxxxx; > alan@xxxxxxxxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; adrian.hunter@xxxxxxxxx > Subject: [PATVH v3 0/3]mmc: set a suitable max_discard_sectors value for HC > > Hi, > This is the version 3 patch which set a suitable max_discard_sectors > value for SDHCI host controller. In this patch, a new quirk is added for > such controller. > > max_discard_sectors is a parameter of MMC driver request queue. This > value can limit how many sectors will be passed down to host for > erasing. The original value for this parameter is UINT_MAX which means > there is no limitation for the count of sectors to pass down for > erasing. > > But some SDHCI host controller cannot erase too many sectors at one > time. It may generate a timeout interrupt since the time erasing used is > longer than the timeout time host can wait. > > So these patches add a new quirk for such SDHCI host controller and let > it erase only signle eraseblock each time. This will be safe for such > SDHCI host to use. > > patch1: add a new quirk for SDHCI host controller. Also add a new > routine mmc_set_discard_limit which is used to set max_discard_sectors > value for such SDHCI host controller. > patch2: set timeout control register for such SDHCI host controller. > patch3: add this quirk for MFLD SDHCI host controller. > > Change-log: > patch1: let mmc_set_discard_limit can return value UINT_MAX. > patch2: no change. > patch3: no change. > > Thanks > Chuanxiao > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
