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dm: core: Fix devfdt_get_addr_ptr return value

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According to the description of devfdt_get_addr_ptr, this function should
return NULL on failure, but currently it returns (void *)FDT_ADDR_T_NONE.

Fix this by making devfdt_get_addr_ptr return NULL on failure, as
described in the function comments. Also, update the drivers currently
checking (void *)FDT_ADDR_T_NONE to check for NULL.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Ovidiu Panait 2020-08-03 22:17:35 +03:00 committed by Simon Glass
parent 02291d83fd
commit 3fe69d3764
7 changed files with 13 additions and 13 deletions
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4
drivers/clk/aspeed/clk_ast2500.c
View File

@ -498,8 +498,8 @@ static int ast2500_clk_ofdata_to_platdata(struct udevice *dev)
struct ast2500_clk_priv *priv = dev_get_priv(dev);
priv->scu = devfdt_get_addr_ptr(dev);
if (IS_ERR(priv->scu))
return PTR_ERR(priv->scu);
if (!priv->scu)
return -EINVAL;
return 0;
}

4
drivers/core/fdtaddr.c
View File

@ -154,7 +154,9 @@ fdt_addr_t devfdt_get_addr(const struct udevice *dev)
void *devfdt_get_addr_ptr(const struct udevice *dev)
{
return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
fdt_addr_t addr = devfdt_get_addr_index(dev, 0);
return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
}
void *devfdt_remap_addr_index(const struct udevice *dev, int index)

4
drivers/i2c/ast_i2c.c
View File

@ -93,8 +93,8 @@ static int ast_i2c_ofdata_to_platdata(struct udevice *dev)
int ret;
priv->regs = devfdt_get_addr_ptr(dev);
if (IS_ERR(priv->regs))
return PTR_ERR(priv->regs);
if (!priv->regs)
return -EINVAL;
ret = clk_get_by_index(dev, 0, &priv->clk);
if (ret < 0) {

2
drivers/pinctrl/mvebu/pinctrl-mvebu.c
View File

@ -194,7 +194,7 @@ int mvebu_pinctl_probe(struct udevice *dev)
}
priv->base_reg = devfdt_get_addr_ptr(dev);
if (priv->base_reg == (void *)FDT_ADDR_T_NONE) {
if (!priv->base_reg) {
debug("%s: Failed to get base address\n", __func__);
return -EINVAL;
}

4
drivers/timer/ast_timer.c
View File

@ -65,8 +65,8 @@ static int ast_timer_ofdata_to_platdata(struct udevice *dev)
struct ast_timer_priv *priv = dev_get_priv(dev);
priv->regs = devfdt_get_addr_ptr(dev);
if (IS_ERR(priv->regs))
return PTR_ERR(priv->regs);
if (!priv->regs)
return -EINVAL;
priv->tmc = ast_get_timer_counter(priv->regs, AST_TICK_TIMER);

4
drivers/watchdog/ast_wdt.c
View File

@ -91,8 +91,8 @@ static int ast_wdt_ofdata_to_platdata(struct udevice *dev)
struct ast_wdt_priv *priv = dev_get_priv(dev);
priv->regs = devfdt_get_addr_ptr(dev);
if (IS_ERR(priv->regs))
return PTR_ERR(priv->regs);
if (!priv->regs)
return -EINVAL;
return 0;
}

4
include/dm/read.h
View File

@ -802,9 +802,7 @@ static inline fdt_addr_t dev_read_addr(const struct udevice *dev)
static inline void *dev_read_addr_ptr(const struct udevice *dev)
{
void *addr = devfdt_get_addr_ptr(dev);
return ((fdt_addr_t)(uintptr_t)addr == FDT_ADDR_T_NONE) ? NULL : addr;
return devfdt_get_addr_ptr(dev);
}
static inline fdt_addr_t dev_read_addr_pci(const struct udevice *dev)