diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/generic/patches-4.4/180-Revert-bcma-init-serial-console-directly-from-ChipCo.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/180-Revert-bcma-init-serial-console-directly-from-ChipCo.patch b/target/linux/generic/patches-4.4/180-Revert-bcma-init-serial-console-directly-from-ChipCo.patch new file mode 100644 index 0000000000..affe090457 --- /dev/null +++ b/target/linux/generic/patches-4.4/180-Revert-bcma-init-serial-console-directly-from-ChipCo.patch @@ -0,0 +1,92 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Subject: [PATCH] Revert "bcma: init serial console directly from ChipCommon + code" +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This reverts commit 4c81acab3816 ("bcma: init serial console directly +from ChipCommon code") as it broke IRQ assignment. Getting IRQ with +bcma_core_irq helper on SoC requires MIPS core to be set. It happens +*after* ChipCommon initialization so we can't do this so early. + +This fixes a user reported regression. It wasn't critical as serial was +still somehow working but lack of IRQs was making in unreliable. + +Fixes: 4c81acab3816 ("bcma: init serial console directly from ChipCommon code") +Reported-by: Felix Fietkau <nbd@nbd.name> +Cc: stable@vger.kernel.org # 4.6+ +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +--- + drivers/bcma/bcma_private.h | 3 +++ + drivers/bcma/driver_chipcommon.c | 11 +++-------- + drivers/bcma/driver_mips.c | 3 +++ + 3 files changed, 9 insertions(+), 8 deletions(-) + +--- a/drivers/bcma/bcma_private.h ++++ b/drivers/bcma/bcma_private.h +@@ -45,6 +45,9 @@ int bcma_sprom_get(struct bcma_bus *bus) + void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc); + void bcma_core_chipcommon_init(struct bcma_drv_cc *cc); + void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable); ++#ifdef CONFIG_BCMA_DRIVER_MIPS ++void bcma_chipco_serial_init(struct bcma_drv_cc *cc); ++#endif /* CONFIG_BCMA_DRIVER_MIPS */ + + /* driver_chipcommon_b.c */ + int bcma_core_chipcommon_b_init(struct bcma_drv_cc_b *ccb); +--- a/drivers/bcma/driver_chipcommon.c ++++ b/drivers/bcma/driver_chipcommon.c +@@ -15,8 +15,6 @@ + #include <linux/platform_device.h> + #include <linux/bcma/bcma.h> + +-static void bcma_chipco_serial_init(struct bcma_drv_cc *cc); +- + static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset, + u32 mask, u32 value) + { +@@ -186,9 +184,6 @@ void bcma_core_chipcommon_early_init(str + if (cc->capabilities & BCMA_CC_CAP_PMU) + bcma_pmu_early_init(cc); + +- if (IS_BUILTIN(CONFIG_BCM47XX) && bus->hosttype == BCMA_HOSTTYPE_SOC) +- bcma_chipco_serial_init(cc); +- + if (bus->hosttype == BCMA_HOSTTYPE_SOC) + bcma_core_chipcommon_flash_detect(cc); + +@@ -378,9 +373,9 @@ u32 bcma_chipco_gpio_pulldown(struct bcm + return res; + } + +-static void bcma_chipco_serial_init(struct bcma_drv_cc *cc) ++#ifdef CONFIG_BCMA_DRIVER_MIPS ++void bcma_chipco_serial_init(struct bcma_drv_cc *cc) + { +-#if IS_BUILTIN(CONFIG_BCM47XX) + unsigned int irq; + u32 baud_base; + u32 i; +@@ -422,5 +417,5 @@ static void bcma_chipco_serial_init(stru + ports[i].baud_base = baud_base; + ports[i].reg_shift = 0; + } +-#endif /* CONFIG_BCM47XX */ + } ++#endif /* CONFIG_BCMA_DRIVER_MIPS */ +--- a/drivers/bcma/driver_mips.c ++++ b/drivers/bcma/driver_mips.c +@@ -278,9 +278,12 @@ static void bcma_core_mips_nvram_init(st + + void bcma_core_mips_early_init(struct bcma_drv_mips *mcore) + { ++ struct bcma_bus *bus = mcore->core->bus; ++ + if (mcore->early_setup_done) + return; + ++ bcma_chipco_serial_init(&bus->drv_cc); + bcma_core_mips_nvram_init(mcore); + + mcore->early_setup_done = true; |