diff options
| author | Stephen Boyd <sboyd@kernel.org> | 2019-07-31 12:35:14 -0700 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2019-08-16 10:20:07 -0700 |
| commit | 09d4922d3c94832962c572808bac20dbee5004c5 (patch) | |
| tree | 270122babdd8a0d86d67d1a6b1cfc5ec9a47d699 /drivers/clk/socfpga | |
| parent | af55dadfbce35b4f4c6247244ce3e44b2e242b84 (diff) | |
clk: socfpga: Don't reference clk_init_data after registration
A future patch is going to change semantics of clk_register() so that
clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid
referencing this member here so that we don't run into NULL pointer
exceptions.
Cc: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20190731193517.237136-7-sboyd@kernel.org
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Diffstat (limited to 'drivers/clk/socfpga')
| -rw-r--r-- | drivers/clk/socfpga/clk-gate.c | 22 | ||||
| -rw-r--r-- | drivers/clk/socfpga/clk-periph-a10.c | 7 |
2 files changed, 16 insertions, 13 deletions
diff --git a/drivers/clk/socfpga/clk-gate.c b/drivers/clk/socfpga/clk-gate.c index 3966cd43b552..2a5876dfa0cf 100644 --- a/drivers/clk/socfpga/clk-gate.c +++ b/drivers/clk/socfpga/clk-gate.c @@ -30,21 +30,22 @@ static u8 socfpga_clk_get_parent(struct clk_hw *hwclk) { u32 l4_src; u32 perpll_src; + const char *name = clk_hw_get_name(hwclk); - if (streq(hwclk->init->name, SOCFPGA_L4_MP_CLK)) { + if (streq(name, SOCFPGA_L4_MP_CLK)) { l4_src = readl(clk_mgr_base_addr + CLKMGR_L4SRC); return l4_src &= 0x1; } - if (streq(hwclk->init->name, SOCFPGA_L4_SP_CLK)) { + if (streq(name, SOCFPGA_L4_SP_CLK)) { l4_src = readl(clk_mgr_base_addr + CLKMGR_L4SRC); return !!(l4_src & 2); } perpll_src = readl(clk_mgr_base_addr + CLKMGR_PERPLL_SRC); - if (streq(hwclk->init->name, SOCFPGA_MMC_CLK)) + if (streq(name, SOCFPGA_MMC_CLK)) return perpll_src &= 0x3; - if (streq(hwclk->init->name, SOCFPGA_NAND_CLK) || - streq(hwclk->init->name, SOCFPGA_NAND_X_CLK)) + if (streq(name, SOCFPGA_NAND_CLK) || + streq(name, SOCFPGA_NAND_X_CLK)) return (perpll_src >> 2) & 3; /* QSPI clock */ @@ -55,24 +56,25 @@ static u8 socfpga_clk_get_parent(struct clk_hw *hwclk) static int socfpga_clk_set_parent(struct clk_hw *hwclk, u8 parent) { u32 src_reg; + const char *name = clk_hw_get_name(hwclk); - if (streq(hwclk->init->name, SOCFPGA_L4_MP_CLK)) { + if (streq(name, SOCFPGA_L4_MP_CLK)) { src_reg = readl(clk_mgr_base_addr + CLKMGR_L4SRC); src_reg &= ~0x1; src_reg |= parent; writel(src_reg, clk_mgr_base_addr + CLKMGR_L4SRC); - } else if (streq(hwclk->init->name, SOCFPGA_L4_SP_CLK)) { + } else if (streq(name, SOCFPGA_L4_SP_CLK)) { src_reg = readl(clk_mgr_base_addr + CLKMGR_L4SRC); src_reg &= ~0x2; src_reg |= (parent << 1); writel(src_reg, clk_mgr_base_addr + CLKMGR_L4SRC); } else { src_reg = readl(clk_mgr_base_addr + CLKMGR_PERPLL_SRC); - if (streq(hwclk->init->name, SOCFPGA_MMC_CLK)) { + if (streq(name, SOCFPGA_MMC_CLK)) { src_reg &= ~0x3; src_reg |= parent; - } else if (streq(hwclk->init->name, SOCFPGA_NAND_CLK) || - streq(hwclk->init->name, SOCFPGA_NAND_X_CLK)) { + } else if (streq(name, SOCFPGA_NAND_CLK) || + streq(name, SOCFPGA_NAND_X_CLK)) { src_reg &= ~0xC; src_reg |= (parent << 2); } else {/* QSPI clock */ diff --git a/drivers/clk/socfpga/clk-periph-a10.c b/drivers/clk/socfpga/clk-periph-a10.c index a8ff7229611d..3e0c55727b89 100644 --- a/drivers/clk/socfpga/clk-periph-a10.c +++ b/drivers/clk/socfpga/clk-periph-a10.c @@ -40,11 +40,12 @@ static u8 clk_periclk_get_parent(struct clk_hw *hwclk) { struct socfpga_periph_clk *socfpgaclk = to_socfpga_periph_clk(hwclk); u32 clk_src; + const char *name = clk_hw_get_name(hwclk); clk_src = readl(socfpgaclk->hw.reg); - if (streq(hwclk->init->name, SOCFPGA_MPU_FREE_CLK) || - streq(hwclk->init->name, SOCFPGA_NOC_FREE_CLK) || - streq(hwclk->init->name, SOCFPGA_SDMMC_FREE_CLK)) + if (streq(name, SOCFPGA_MPU_FREE_CLK) || + streq(name, SOCFPGA_NOC_FREE_CLK) || + streq(name, SOCFPGA_SDMMC_FREE_CLK)) return (clk_src >> CLK_MGR_FREE_SHIFT) & CLK_MGR_FREE_MASK; else |