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![]() So testing managed to configure musb in DMA mode but not load the matching cppi41 driver for DMA. This results in |musb-hdrc musb-hdrc.0.auto: Failed to request rx1. |musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517 |platform musb-hdrc.0.auto: Driver musb-hdrc requests probe deferral which is "okay". Once the driver is loaded we re-try probing and everyone is happy. Until then if you try suspend say echo mem > /sys/power/state then you go boom |Unable to handle kernel NULL pointer dereference at virtual address 000003a4 |pgd = cf50c000 |[000003a4] *pgd=8f6a3831, *pte=00000000, *ppte=00000000 |Internal error: Oops: 17 [#1] ARM |PC is at dsps_suspend+0x18/0x9c [musb_dsps] |LR is at dsps_suspend+0x18/0x9c [musb_dsps] |pc : [<bf08e268>] lr : [<bf08e268>] psr: a0000013 |sp : cbd97e00 ip : c0af4394 fp : 00000000 |r10: c0831d90 r9 : 00000002 r8 : cf6da410 |r7 : c03ba4dc r6 : bf08f224 r5 : 00000000 r4 : cbc5fcd0 |r3 : bf08e250 r2 : bf08f264 r1 : cf6da410 r0 : 00000000 |[<bf08e268>] (dsps_suspend [musb_dsps]) from [<c03ba508>] (platform_pm_suspend+0x2c/0x54) |Code: e1a04000 e9900041 e2800010 eb4caa8e (e59053a4) because platform_get_drvdata(glue->musb) returns a NULL pointer as long as the device is not fully probed. Tested-by: George Cherian <george.cherian@ti.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com> |
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.. | ||
am35x.c | ||
blackfin.c | ||
blackfin.h | ||
cppi_dma.c | ||
cppi_dma.h | ||
da8xx.c | ||
davinci.c | ||
davinci.h | ||
jz4740.c | ||
Kconfig | ||
Makefile | ||
musb_am335x.c | ||
musb_core.c | ||
musb_core.h | ||
musb_cppi41.c | ||
musb_debug.h | ||
musb_debugfs.c | ||
musb_dma.h | ||
musb_dsps.c | ||
musb_gadget.c | ||
musb_gadget.h | ||
musb_gadget_ep0.c | ||
musb_host.c | ||
musb_host.h | ||
musb_io.h | ||
musb_regs.h | ||
musb_virthub.c | ||
musbhsdma.c | ||
musbhsdma.h | ||
omap2430.c | ||
omap2430.h | ||
tusb6010.c | ||
tusb6010.h | ||
tusb6010_omap.c | ||
ux500.c | ||
ux500_dma.c |