[5/9] clk: sirf: Don't reference clk_init_data after registration
diff mbox series

Message ID 20190731193517.237136-6-sboyd@kernel.org
State New, archived
Headers show
Series
  • Make clk_hw::init NULL after clk registration
Related show

Commit Message

Stephen Boyd July 31, 2019, 7:35 p.m. UTC
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: Guo Zeng <Guo.Zeng@csr.com>
Cc: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---

Please ack so I can take this through clk tree

 drivers/clk/sirf/clk-common.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

Comments

Stephen Boyd Aug. 14, 2019, 12:25 a.m. UTC | #1
Quoting Stephen Boyd (2019-07-31 12:35:13)
> 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: Guo Zeng <Guo.Zeng@csr.com>
> Cc: Barry Song <Baohua.Song@csr.com>
> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
> ---

Applied to clk-next

Patch
diff mbox series

diff --git a/drivers/clk/sirf/clk-common.c b/drivers/clk/sirf/clk-common.c
index ad7951b6b285..dcf4e25a0216 100644
--- a/drivers/clk/sirf/clk-common.c
+++ b/drivers/clk/sirf/clk-common.c
@@ -297,9 +297,10 @@  static u8 dmn_clk_get_parent(struct clk_hw *hw)
 {
 	struct clk_dmn *clk = to_dmnclk(hw);
 	u32 cfg = clkc_readl(clk->regofs);
+	const char *name = clk_hw_get_name(hw);
 
 	/* parent of io domain can only be pll3 */
-	if (strcmp(hw->init->name, "io") == 0)
+	if (strcmp(name, "io") == 0)
 		return 4;
 
 	WARN_ON((cfg & (BIT(3) - 1)) > 4);
@@ -311,9 +312,10 @@  static int dmn_clk_set_parent(struct clk_hw *hw, u8 parent)
 {
 	struct clk_dmn *clk = to_dmnclk(hw);
 	u32 cfg = clkc_readl(clk->regofs);
+	const char *name = clk_hw_get_name(hw);
 
 	/* parent of io domain can only be pll3 */
-	if (strcmp(hw->init->name, "io") == 0)
+	if (strcmp(name, "io") == 0)
 		return -EINVAL;
 
 	cfg &= ~(BIT(3) - 1);
@@ -353,7 +355,8 @@  static long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 {
 	unsigned long fin;
 	unsigned ratio, wait, hold;
-	unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
+	const char *name = clk_hw_get_name(hw);
+	unsigned bits = (strcmp(name, "mem") == 0) ? 3 : 4;
 
 	fin = *parent_rate;
 	ratio = fin / rate;
@@ -375,7 +378,8 @@  static int dmn_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	struct clk_dmn *clk = to_dmnclk(hw);
 	unsigned long fin;
 	unsigned ratio, wait, hold, reg;
-	unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
+	const char *name = clk_hw_get_name(hw);
+	unsigned bits = (strcmp(name, "mem") == 0) ? 3 : 4;
 
 	fin = parent_rate;
 	ratio = fin / rate;