On 06.11.2014 11:32, Inki Dae wrote: > This patch resolves temporarily infinite loop issue incurred > when Exynos drm driver is enabled and multi-platform kernel > is used by registering Exynos drm device object only in case > of Exynos SoC. So this patch will be replaced with more generic > way later. Does not help for Rinato board. On Rinato: ----------------------- Failed to find PMU node Registering SWP/SWPB emulation handler mmc0: BKOPS_EN bit is not set mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 100000000Hz, actual 100000000HZ div = 0) exynos-drm-ipp exynos-drm-ipp: drm ipp registered successfully. mmc0: new HS200 MMC card at address 0001 platform exynos-drm: Driver exynos-drm requests probe deferral mmcblk0: mmc0:0001 F5X5MA 3.64 GiB mmcblk0boot0: mmc0:0001 F5X5MA partition 1 4.00 MiB exynos-drm-ipp exynos-drm-ipp: drm ipp registered successfully. mmcblk0boot1: mmc0:0001 F5X5MA partition 2 4.00 MiB platform exynos-drm: Driver exynos-drm requests probe deferral mmcblk0rpmb: mmc0:0001 F5X5MA partition 3 512 KiB exynos-drm-ipp exynos-drm-ipp: drm ipp registered successfully. platform exynos-drm: Driver exynos-drm requests probe deferral mmcblk0: p1 p2 p3 p4 p5 p6 p7 exynos-drm-ipp exynos-drm-ipp: drm ipp registered successfully. platform exynos-drm: Driver exynos-drm requests probe deferral exynos-drm-ipp exynos-drm-ipp: drm ipp registered successfully. platform exynos-drm: Driver exynos-drm requests probe deferral and so on... ----------------------- I do not know whether it is related but Trats2 board cannot boot due to lockup after: [drm] Initialized drm 1.1.0 20060810 (with or without the patch) https://lkml.org/lkml/2014/11/6/125 Best regards, Krzysztof > > Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx> > --- > drivers/gpu/drm/exynos/exynos_drm_drv.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c > index 443a206..ecc86aa 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c > @@ -734,6 +734,18 @@ static int exynos_drm_init(void) > { > int ret; > > + /* > + * Register device object only in case of Exynos SoC. > + * > + * Below codes resolves temporarily infinite loop issue incurred > + * by Exynos drm driver when using multi-platform kernel. > + * So these codes will be replaced with more generic way later. > + */ > + if (!of_machine_is_compatible("samsung,exynos3") && > + !of_machine_is_compatible("samsung,exynos4") && > + !of_machine_is_compatible("samsung,exynos5")) > + return -ENODEV; > + > exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, > NULL, 0); > if (IS_ERR(exynos_drm_pdev)) > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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