diff options
Diffstat (limited to 'target/linux/avr32/patches-3.10')
| -rw-r--r-- | target/linux/avr32/patches-3.10/100-avr32-balance-cpu_idle_poll_ctrl-calls.patch | 68 | ||||
| -rw-r--r-- | target/linux/avr32/patches-3.10/110-openwrt_flashmap.patch | 31 |
2 files changed, 99 insertions, 0 deletions
diff --git a/target/linux/avr32/patches-3.10/100-avr32-balance-cpu_idle_poll_ctrl-calls.patch b/target/linux/avr32/patches-3.10/100-avr32-balance-cpu_idle_poll_ctrl-calls.patch new file mode 100644 index 0000000000..15918d623f --- /dev/null +++ b/target/linux/avr32/patches-3.10/100-avr32-balance-cpu_idle_poll_ctrl-calls.patch @@ -0,0 +1,68 @@ +From 1b2bdd19742d4a336a4865d9b352c7a0ca7028ee Mon Sep 17 00:00:00 2001 +From: Gabor Juhos <juhosg@openwrt.org> +Date: Wed, 25 Sep 2013 10:00:10 +0200 +Subject: [PATCH] avr32: balance cpu_idle_poll_ctrl calls + +Since commit 01426478df3a8791ff5c8b6b82d409e699cfaf38 +(avr32: Use generic idle loop) the kernel throws the +following warning on avr32: + + WARNING: at 900322e4 [verbose debug info unavailable] + Modules linked in: + CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc2 #117 + task: 901c3ecc ti: 901c0000 task.ti: 901c0000 + PC is at cpu_idle_poll_ctrl+0x1c/0x38 + LR is at comparator_mode+0x3e/0x40 + pc : [<900322e4>] lr : [<90014882>] Not tainted + sp : 901c1f74 r12: 00000000 r11: 901c74a0 + r10: 901d2510 r9 : 00000001 r8 : 901db4de + r7 : 901c74a0 r6 : 00000001 r5 : 00410020 r4 : 901db574 + r3 : 00410024 r2 : 90206fe0 r1 : 00000000 r0 : 007f0000 + Flags: qvnzc + Mode bits: hjmde....G + CPU Mode: Supervisor + Call trace: + [<90039ede>] clockevents_set_mode+0x16/0x2e + [<90039f00>] clockevents_shutdown+0xa/0x1e + [<9003a078>] clockevents_exchange_device+0x58/0x70 + [<9003a78c>] tick_check_new_device+0x38/0x54 + [<9003a1a2>] clockevents_register_device+0x32/0x90 + [<900035c4>] time_init+0xa8/0x108 + [<90000520>] start_kernel+0x128/0x23c + +When the 'avr32_comparator' clockevent device is registered, +the clockevent core sets the mode of that clockevent device +to CLOCK_EVT_MODE_SHUTDOWN. Due to this, the 'comparator_mode' +function calls the 'cpu_idle_poll_ctrl' to disables idle poll. +This results in the aforementioned warning because the polling +is not enabled yet. + +Change the code to only disable idle poll if it is enabled by +the same function to avoid the warning. + +Cc: stable@vger.kernel.org +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +--- +Note: the patch is against v3.12-rc2. +--- + arch/avr32/kernel/time.c | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +--- a/arch/avr32/kernel/time.c ++++ b/arch/avr32/kernel/time.c +@@ -98,7 +98,14 @@ static void comparator_mode(enum clock_e + case CLOCK_EVT_MODE_SHUTDOWN: + sysreg_write(COMPARE, 0); + pr_debug("%s: stop\n", evdev->name); +- cpu_idle_poll_ctrl(false); ++ if (evdev->mode == CLOCK_EVT_MODE_ONESHOT || ++ evdev->mode == CLOCK_EVT_MODE_RESUME) { ++ /* ++ * Only disable idle poll if we have forced that ++ * in a previous call. ++ */ ++ cpu_idle_poll_ctrl(false); ++ } + break; + default: + BUG(); diff --git a/target/linux/avr32/patches-3.10/110-openwrt_flashmap.patch b/target/linux/avr32/patches-3.10/110-openwrt_flashmap.patch new file mode 100644 index 0000000000..3f87699b04 --- /dev/null +++ b/target/linux/avr32/patches-3.10/110-openwrt_flashmap.patch @@ -0,0 +1,31 @@ +--- a/arch/avr32/boards/atngw100/flash.c ++++ b/arch/avr32/boards/atngw100/flash.c +@@ -45,9 +45,14 @@ static struct mtd_partition flash_parts[ + .mask_flags = MTD_WRITEABLE, + }, + { +- .name = "root", ++ .name = "kernel", + .offset = 0x00020000, +- .size = 0x007d0000, ++ .size = 0x00100000, ++ }, ++ { ++ .name = "rootfs", ++ .offset = 0x00120000, ++ .size = 0x006d0000, + }, + { + .name = "env", +@@ -55,6 +60,11 @@ static struct mtd_partition flash_parts[ + .size = 0x00010000, + .mask_flags = MTD_WRITEABLE, + }, ++ { ++ .name = "firmware", ++ .offset = 0x00020000, ++ .size = 0x007d0000, ++ }, + }; + + static struct physmap_flash_data flash_data = { |