diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0257-clk-bcm2835-add-locking-to-pll-_on-off-methods.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0257-clk-bcm2835-add-locking-to-pll-_on-off-methods.patch | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0257-clk-bcm2835-add-locking-to-pll-_on-off-methods.patch b/target/linux/brcm2708/patches-4.4/0257-clk-bcm2835-add-locking-to-pll-_on-off-methods.patch deleted file mode 100644 index 29f45529e8..0000000000 --- a/target/linux/brcm2708/patches-4.4/0257-clk-bcm2835-add-locking-to-pll-_on-off-methods.patch +++ /dev/null @@ -1,53 +0,0 @@ -From 39c3c0d0a8d038a692b95cc13e7d6acf2d04cf14 Mon Sep 17 00:00:00 2001 -From: Martin Sperl <kernel@martin.sperl.org> -Date: Mon, 29 Feb 2016 11:39:18 +0000 -Subject: [PATCH 257/304] clk: bcm2835: add locking to pll*_on/off methods - -Add missing locking to: -* bcm2835_pll_divider_on -* bcm2835_pll_divider_off -to protect the read modify write cycle for the -register access protecting both cm_reg and a2w_reg -registers. - -Fixes: 41691b8862e2 ("clk: bcm2835: Add support for programming the -audio domain clocks") - -Signed-off-by: Martin Sperl <kernel@martin.sperl.org> -Signed-off-by: Eric Anholt <eric@anholt.net> -Reviewed-by: Eric Anholt <eric@anholt.net> -(cherry picked from commit ec36a5c6682fdd5328abf15c3c67281bed0241d7) ---- - drivers/clk/bcm/clk-bcm2835.c | 4 ++++ - 1 file changed, 4 insertions(+) - ---- a/drivers/clk/bcm/clk-bcm2835.c -+++ b/drivers/clk/bcm/clk-bcm2835.c -@@ -1097,10 +1097,12 @@ static void bcm2835_pll_divider_off(stru - struct bcm2835_cprman *cprman = divider->cprman; - const struct bcm2835_pll_divider_data *data = divider->data; - -+ spin_lock(&cprman->regs_lock); - cprman_write(cprman, data->cm_reg, - (cprman_read(cprman, data->cm_reg) & - ~data->load_mask) | data->hold_mask); - cprman_write(cprman, data->a2w_reg, A2W_PLL_CHANNEL_DISABLE); -+ spin_unlock(&cprman->regs_lock); - } - - static int bcm2835_pll_divider_on(struct clk_hw *hw) -@@ -1109,12 +1111,14 @@ static int bcm2835_pll_divider_on(struct - struct bcm2835_cprman *cprman = divider->cprman; - const struct bcm2835_pll_divider_data *data = divider->data; - -+ spin_lock(&cprman->regs_lock); - cprman_write(cprman, data->a2w_reg, - cprman_read(cprman, data->a2w_reg) & - ~A2W_PLL_CHANNEL_DISABLE); - - cprman_write(cprman, data->cm_reg, - cprman_read(cprman, data->cm_reg) & ~data->hold_mask); -+ spin_unlock(&cprman->regs_lock); - - return 0; - } |