[PATCH 3.16.y-ckt 034/183] ARM: DRA7: hwmod: Fix boot crash with DEBUG_LL enabled on UART3
From: Luis Henriques
Date: Fri Mar 06 2015 - 06:02:19 EST
3.16.7-ckt8 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Lokesh Vutla <lokeshvutla@xxxxxx>
commit 1c7e36bfc3e2fb2df5e2d1989a4b6fb9055a0f9b upstream.
With commit '7dedd34: ARM: OMAP2+: hwmod: Fix a crash in _setup_reset()
with DEBUG_LL' we moved from parsing cmdline to identify uart used
for earlycon to using the requsite hwmod CONFIG_DEBUG_OMAPxUARTy FLAGS.
On DRA7 UART3 hwmod doesn't have this flag enabled, and atleast on
BeagleBoard-X15, where we use UART3 for console, boot fails with
DEBUG_LL enabled. Enable DEBUG_OMAP4UART3_FLAGS for UART3 hwmod.
For using DEBUG_LL, enable CONFIG_DEBUG_OMAP4UART3 in menuconfig.
Fixes: 90020c7b2c5e ("ARM: OMAP: DRA7: hwmod: Create initial DRA7XX SoC data")
Reviewed-by: Felipe Balbi <balbi@xxxxxx>
Acked-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Lokesh Vutla <lokeshvutla@xxxxxx>
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
index c95033c1029b..6b6ac11bcafa 100644
--- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
@@ -1665,7 +1665,7 @@ static struct omap_hwmod dra7xx_uart3_hwmod = {
.class = &dra7xx_uart_hwmod_class,
.clkdm_name = "l4per_clkdm",
.main_clk = "uart3_gfclk_mux",
- .flags = HWMOD_SWSUP_SIDLE_ACT,
+ .flags = HWMOD_SWSUP_SIDLE_ACT | DEBUG_OMAP4UART3_FLAGS,
.prcm = {
.omap4 = {
.clkctrl_offs = DRA7XX_CM_L4PER_UART3_CLKCTRL_OFFSET,
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/