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mmc: dw_mmc: fixes crash when CONFIG_ROCKCHIP_THUNDER_BOOT=y

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[  100.584484] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[  100.584500] pgd = 466047cd
[  100.584509] [00000000] *pgd=00000000
[  100.584526] Internal error: Oops - BUG: 17 [#1] THUMB2
[  100.584534] Modules linked in: dw_mmc_rockchip(+) rknpu snd_soc_rv1106 rockit(O) mpp_vcodec(O) rga3
[  100.584586] CPU: 0 PID: 9 Comm: kworker/u2:1 Tainted: G           O      5.10.66 #9
[  100.584593] Hardware name: Generic DT based system
[  100.584618] Workqueue: events_unbound async_run_entry_fn
[  100.584638] PC is at dw_mci_probe+0x10a/0x7dc
[  100.584655] LR is at clk_core_enable_lock+0x19/0x1c
[  100.584667] pc : [<b038428a>]    lr : [<b02f79ef>]    psr: 60000033
[  100.584676] sp : b00a1e88  ip : b1caf580  fp : af8c29f4
[  100.584686] r10: 00000000  r9 : af8c2c04  r8 : af8c29f4
[  100.584696] r7 : b00cc4e4  r6 : 00000001  r5 : b1caf450  r4 : b1c8c010
[  100.584706] r3 : 00000000  r2 : b05b095c  r1 : 00000000  r0 : 00000000
[  100.584720] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA Thumb  Segment user
[  100.584731] Control: 50c53c7d  Table: 01c88059  DAC: 00000055
[  100.584743] Process kworker/u2:1 (pid: 9, stack limit = 0xc7a2c6f9)
[  100.584753] Stack: (0xb00a1e88 to 0xb00a2000)
[  100.584769] 1e80:                   00000001 00000001 ff9a0000 b02cce69 b1caf410 00000000
[  100.584787] 1ea0: b1c8c010 b00cc400 b00cc410 b00cc410 b00cc400 00000001 b00cc4e4 af8c29f4
[  100.584805] 1ec0: af8c2c04 0000000a 00000000 af8c2469 00000000 b00cc410 af8c2c04 b05b1e04
[  100.584822] 1ee0: 00000000 b031b3e3 b00cc410 00000000 b05b1e08 b031a775 00000000 b00cc410
[  100.584840] 1f00: af8c2c04 b1caf2c0 b0008000 00000000 00000000 b1caf2d4 00000000 b031a959
[  100.584858] 1f20: b00bed00 b00cc410 b05a1018 b031a989 b1caf2d0 b0223ad5 b002f8a0 b1caf2d0
[  100.584877] 1f40: b0007000 b021f917 b002f8a0 b1caf2d0 b002f8a0 b002f8b4 b0007000 b057ed20
[  100.584896] 1f60: b05a191c b0007014 b0007040 b021fbc3 b009d300 b0094920 ffffe000 b005bed0
[  100.584914] 1f80: b021fae1 b002f8a0 b009d320 b0222553 b0094920 b02224b1 00000000 00000000
[  100.584931] 1fa0: 00000000 00000000 00000000 b02082e9 00000000 00000000 00000000 00000000
[  100.584946] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[  100.584962] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[  100.585012] [<b038428a>] (dw_mci_probe) from [<af8c2469>] (dw_mci_rockchip_probe+0x79/0xbc [dw_mmc_rockchip])
[  100.585049] [<af8c2469>] (dw_mci_rockchip_probe [dw_mmc_rockchip]) from [<b031b3e3>] (platform_drv_probe+0x2d/0x5a)
[  100.585074] [<b031b3e3>] (platform_drv_probe) from [<b031a775>] (really_probe+0x16f/0x23e)
[  100.585096] [<b031a775>] (really_probe) from [<b031a959>] (driver_probe_device+0x5d/0x6c)
[  100.585118] [<b031a959>] (driver_probe_device) from [<b031a989>] (__driver_attach_async_helper+0x21/0x32)
[  100.585139] [<b031a989>] (__driver_attach_async_helper) from [<b0223ad5>] (async_run_entry_fn+0x25/0xa0)
[  100.585165] [<b0223ad5>] (async_run_entry_fn) from [<b021f917>] (process_one_work+0xd5/0x136)
[  100.585191] [<b021f917>] (process_one_work) from [<b021fbc3>] (worker_thread+0xe3/0x190)
[  100.585213] [<b021fbc3>] (worker_thread) from [<b0222553>] (kthread+0xa3/0xac)
[  100.585237] [<b0222553>] (kthread) from [<b02082e9>] (ret_from_fork+0x11/0x28)
[  100.585248] Exception stack(0xb00a1fb0 to 0xb00a1ff8)

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Change-Id: Ia0e2d83c53a757b1cf3703408a2803052ff78049
This commit is contained in:
Ziyuan Xu 2022-04-28 17:32:19 +08:00 committed by Tao Huang
parent 2bf59d2fc5
commit 2f27a48ee3
1 changed files with 2 additions and 2 deletions
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4
drivers/mmc/host/dw_mmc.c
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@ -3317,8 +3317,8 @@ int dw_mci_probe(struct dw_mci *host)
}
#ifdef CONFIG_ROCKCHIP_THUNDER_BOOT
if (host->slot->mmc->caps2 & MMC_CAP2_NO_SD &&
host->slot->mmc->caps2 & MMC_CAP2_NO_SDIO) {
if (device_property_read_bool(host->dev, "no-sd") &&
device_property_read_bool(host->dev, "no-sdio")) {
if (readl_poll_timeout(host->regs + SDMMC_STATUS,
fifo_size,
!(fifo_size & (BIT(10) | GENMASK(7, 4))),