David Vrabel wrote: > Mike Rapoport wrote: >> Hi David, >> >> David Vrabel wrote: >>> These patches add support for SDIO cards to the omap_hsmmc driver. Less >>> restrictions on the sizes of transfers, power management changes to >>> prevent SDIO cards from being turned off and losing all state, and card >>> interrupts. >>> >>> I've been unable to test these exact patches as I only have an N900 for >>> testing and the N900 support in mainline is incomplete. >> I've tried your patches on CM-T35 that has 8686 SDIO and the result was >> absence of MMC/SDIO devices at all :( Morover, kmmcd hangs: >> >> [ 399.427764] INFO: task kmmcd:149 blocked for more than 120 seconds. >> [...] >> [ 399.485290] [<c01e6264>] (mmc_wait_for_cmd+0x64/0x74) from >> [<c01e86b0>] (mmc_go_idle+0x60/0xac) > > I suspect interrupts aren't enabled correctly as this command does not > complete. Try reverting this hunk. I did. No changes... I've started to apply the patches one by one and after the first patch is applied, the SD card works Ok, but libertas fails to initialize with the following messages: > modprobe libertas_sdio [ 82.233489] lib80211: common routines for IEEE802.11 drivers [ 82.833251] cfg80211: Calling CRDA to update world regulatory domain [ 83.327911] libertas_sdio: Libertas SDIO driver [ 83.332489] libertas_sdio: Copyright Pierre Ossman [ 83.348510] libertas_sdio mmc1:0001:1: firmware: requesting sd8686_helper.bin [ 83.497619] libertas_sdio mmc1:0001:1: firmware: requesting sd8686.bin [ 83.679229] DMA synchronization event drop occurred with device 47 And then modprobe hangs: [ 258.700561] INFO: task modprobe:1191 blocked for more than 120 seconds. [ 258.707336] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 258.715270] modprobe D c027f794 0 1191 1182 0x00000003 [ 258.721588] [<c027f794>] (schedule+0x274/0x2ac) from [<c027f998>] (schedule_timeout+0x18/0x17c) [ 258.730377] [<c027f998>] (schedule_timeout+0x18/0x17c) from [<c027f414>] (wait_for_common+0xc0/0x14c) [ 258.739746] [<c027f414>] (wait_for_common+0xc0/0x14c) from [<c01e61e0>] (mmc_wait_for_req+0x1f4/0x214) [ 258.749145] [<c01e61e0>] (mmc_wait_for_req+0x1f4/0x214) from [<c01ea2a0>] (mmc_io_rw_extended+0x188/0x1f0) [ 258.758911] [<c01ea2a0>] (mmc_io_rw_extended+0x188/0x1f0) from [<c01eb1c4>] (sdio_io_rw_ext_helper+0xc4/0x184) [ 258.769012] [<c01eb1c4>] (sdio_io_rw_ext_helper+0xc4/0x184) from [<c01eb29c>] (sdio_writesb+0x18/0x1c) [ 258.778442] [<c01eb29c>] (sdio_writesb+0x18/0x1c) from [<bf0638dc>] (if_sdio_probe+0x63c/0x938 [libertas_sdio]) [ 258.788665] [<bf0638dc>] (if_sdio_probe+0x63c/0x938 [libertas_sdio]) from [<c01ea724>] (sdio_bus_probe+0x5c/0x68) [ 258.799041] [<c01ea724>] (sdio_bus_probe+0x5c/0x68) from [<c01a67a4>] (driver_probe_device+0xa0/0x14c) [ 258.808441] [<c01a67a4>] (driver_probe_device+0xa0/0x14c) from [<c01a68b0>] (__driver_attach+0x60/0x84) [ 258.817932] [<c01a68b0>] (__driver_attach+0x60/0x84) from [<c01a5c8c>] (bus_for_each_dev+0x44/0x78) [ 258.827087] [<c01a5c8c>] (bus_for_each_dev+0x44/0x78) from [<c01a6224>] (bus_add_driver+0x9c/0x224) [ 258.836212] [<c01a6224>] (bus_add_driver+0x9c/0x224) from [<c01a6c08>] (driver_register+0xa8/0x130) [ 258.845367] [<c01a6c08>] (driver_register+0xa8/0x130) from [<bf06701c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio]) [ 258.856292] [<bf06701c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio]) from [<c0029344>] (do_one_initcall+0x54/0x190) [ 258.867187] [<c0029344>] (do_one_initcall+0x54/0x190) from [<c0073130>] (sys_init_module+0xb8/0x1e4) [ 258.876403] [<c0073130>] (sys_init_module+0xb8/0x1e4) from [<c0029e80>] (ret_fast_syscall+0x0/0x2c) > @@ -426,12 +431,6 @@ omap_hsmmc_start_command(struct omap_hsmmc_host > *host, struct mmc_command *cmd, > mmc_hostname(host->mmc), cmd->opcode, cmd->arg); > host->cmd = cmd; > > - /* > - * Clear status bits and enable interrupts > - */ > - OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR); > - OMAP_HSMMC_WRITE(host->base, ISE, INT_EN_MASK); > - > if (host->use_dma) > OMAP_HSMMC_WRITE(host->base, IE, > INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE)); > > David -- Sincerely yours, Mike. -- 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
