Hi all, I'm getting an Oops during boot of 3.18-rc2 on my Radxa Rock. It only happens when a microSD card is inserted. Full boot log: https://gist.github.com/xqms/ff6fc22407e705c9986d My .config: https://gist.github.com/xqms/9f80f9f9601f85d399cf The issue seems to be in the dw-mmc driver. It seems that an IRQ is triggered before the host->slot[i] pointer is initialized, causing the fault in line 2066 of drivers/mmc/host/dw_mmc.c: static void dw_mci_work_routine_card(struct work_struct *work) { struct dw_mci *host = container_of(work, struct dw_mci, card_work); int i; for (i = 0; i < host->num_slots; i++) { struct dw_mci_slot *slot = host->slot[i]; struct mmc_host *mmc = slot->mmc; <-- FAULT struct mmc_request *mrq; A bisect ends at: commit 51da2240906cb94e8f6ba55e403b6206df6fb2dd Author: Yuvaraj CD <yuvaraj.cd at gmail.com> Date: Fri Aug 22 19:17:50 2014 +0530 mmc: dw_mmc: use mmc_regulator_get_supply to handle regulators This patch makes use of mmc_regulator_get_supply() to handle the vmmc and vqmmc regulators.Also it moves the code handling the these regulators to dw_mci_set_ios().It turned on the vmmc and vqmmc during MMC_POWER_UP and MMC_POWER_ON,and turned off during MMC_POWER_OFF. Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd at samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson at linaro.org> That seems a bit unrelated to me, but maybe it causes a different initialization order? I'm playing around with the initialization order myself, but I haven't managed to find a working configuration yet. Can somebody with MMC knowledge find the problem or point me into the right direction? Cheers, Max
