This is a note to let you know that I've just added the patch titled
Revert "bcma: init serial console directly from ChipCommon code"
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-bcma-init-serial-console-directly-from-chipcommon-code.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7195439d1d71bc4a6c33cfb57bc669a7cd041041 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@xxxxxxxxxx>
Date: Fri, 13 Jan 2017 12:23:35 +0100
Subject: Revert "bcma: init serial console directly from ChipCommon code"
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From: Rafał Miłecki <rafal@xxxxxxxxxx>
commit 7195439d1d71bc4a6c33cfb57bc669a7cd041041 upstream.
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@xxxxxxxx>
Signed-off-by: Rafał Miłecki <rafal@xxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
Patches currently in stable-queue which might be from rafal@xxxxxxxxxx are
queue-4.9/revert-bcma-init-serial-console-directly-from-chipcommon-code.patch
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