From patchwork Thu May 21 16:14:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Anderson X-Patchwork-Id: 246153 List-Id: U-Boot discussion From: seanga2 at gmail.com (Sean Anderson) Date: Thu, 21 May 2020 12:14:51 -0400 Subject: [PATCH v13 09/21] dm: Fix error handling for dev_read_addr_ptr In-Reply-To: <20200521161503.384823-1-seanga2@gmail.com> References: <20200521161503.384823-1-seanga2@gmail.com> Message-ID: <20200521161503.384823-10-seanga2@gmail.com> dev_read_addr_ptr had different semantics depending on whether OF_LIVE was enabled. This patch converts both implementations to return NULL on error, and converts all call sites which check for FDT_ADDR_T_NONE to check for NULL instead. This patch also removes the call to map_physmem, since we have dev_remap_addr* for those semantics. Signed-off-by: Sean Anderson Reviewed-by: Bin Meng Reviewed-by: Simon Glass --- Changes in v10: - Explicitly cast fdt_addr_t to uintptr_t before casting to void * Changes in v5: - New drivers/clk/imx/clk-imx8mp.c | 2 +- drivers/core/read.c | 2 +- drivers/pinctrl/broadcom/pinctrl-bcm283x.c | 2 +- drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 2 +- include/dm/read.h | 4 +++- 5 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/clk/imx/clk-imx8mp.c b/drivers/clk/imx/clk-imx8mp.c index 3d7aebb8e5..124138cf51 100644 --- a/drivers/clk/imx/clk-imx8mp.c +++ b/drivers/clk/imx/clk-imx8mp.c @@ -282,7 +282,7 @@ static int imx8mp_clk_probe(struct udevice *dev) clk_dm(IMX8MP_SYS_PLL2_1000M, imx_clk_fixed_factor("sys_pll2_1000m", "sys_pll2_out", 1, 1)); base = dev_read_addr_ptr(dev); - if (base == (void *)FDT_ADDR_T_NONE) + if (!base) return -EINVAL; clk_dm(IMX8MP_CLK_A53_SRC, imx_clk_mux2("arm_a53_src", base + 0x8000, 24, 3, imx8mp_a53_sels, ARRAY_SIZE(imx8mp_a53_sels))); diff --git a/drivers/core/read.c b/drivers/core/read.c index 3d421f7a69..24f324eac2 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -167,7 +167,7 @@ void *dev_read_addr_ptr(const struct udevice *dev) { fdt_addr_t addr = dev_read_addr(dev); - return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0); + return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr; } void *dev_remap_addr(const struct udevice *dev) diff --git a/drivers/pinctrl/broadcom/pinctrl-bcm283x.c b/drivers/pinctrl/broadcom/pinctrl-bcm283x.c index f44af6cf9a..c22d534da9 100644 --- a/drivers/pinctrl/broadcom/pinctrl-bcm283x.c +++ b/drivers/pinctrl/broadcom/pinctrl-bcm283x.c @@ -117,7 +117,7 @@ int bcm283x_pinctl_probe(struct udevice *dev) } priv->base_reg = dev_read_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; } diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c index 5fdc150295..e8187a3780 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c @@ -631,7 +631,7 @@ int mtk_pinctrl_common_probe(struct udevice *dev, int ret; priv->base = dev_read_addr_ptr(dev); - if (priv->base == (void *)FDT_ADDR_T_NONE) + if (!priv->base) return -EINVAL; priv->soc = soc; diff --git a/include/dm/read.h b/include/dm/read.h index b952551d55..555c73248c 100644 --- a/include/dm/read.h +++ b/include/dm/read.h @@ -799,7 +799,9 @@ static inline fdt_addr_t dev_read_addr(const struct udevice *dev) static inline void *dev_read_addr_ptr(const struct udevice *dev) { - return devfdt_get_addr_ptr(dev); + void *addr = devfdt_get_addr_ptr(dev); + + return ((fdt_addr_t)(uintptr_t)addr == FDT_ADDR_T_NONE) ? NULL : addr; } static inline fdt_addr_t dev_read_addr_pci(const struct udevice *dev)