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authorMasahiro Yamada <yamada.masahiro@socionext.com>2017-10-21 01:57:41 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-08 13:54:17 +0100
commitec3672b81fc8ff490e478bc5124f68c2be7174ee (patch)
tree397cbf55885172c99932eff0d0528e0c4a8062bd /drivers/nvmem
parenta48f1fff7e2fe5fbaf0295ff7705909fd31f1c35 (diff)
nvmem: qfprom: fix different address space warnings of sparse
Fix the following sparse warnings: drivers/nvmem/qfprom.c:23:30: warning: incorrect type in initializer (different address spaces) drivers/nvmem/qfprom.c:23:30: expected void [noderef] <asn:2>*base drivers/nvmem/qfprom.c:23:30: got void *context drivers/nvmem/qfprom.c:36:30: warning: incorrect type in initializer (different address spaces) drivers/nvmem/qfprom.c:36:30: expected void [noderef] <asn:2>*base drivers/nvmem/qfprom.c:36:30: got void *context drivers/nvmem/qfprom.c:76:22: warning: incorrect type in assignment (different address spaces) drivers/nvmem/qfprom.c:76:22: expected void *static [toplevel] [assigned] priv drivers/nvmem/qfprom.c:76:22: got void [noderef] <asn:2>*[assigned] base The type of nvmem_config->priv is (void *), so sparse complains about assignment of the base address with (void __iomem *) type. Even if we cast it out, sparse still warns: warning: cast removes address space of expression Of course, we can shut up the sparse by marking __force, but a more correct way is to put the base address into driver private data. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem')
-rw-r--r--drivers/nvmem/qfprom.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c
index 2bdb6c389328..b96730e99580 100644
--- a/drivers/nvmem/qfprom.c
+++ b/drivers/nvmem/qfprom.c
@@ -17,15 +17,19 @@
#include <linux/nvmem-provider.h>
#include <linux/platform_device.h>
+struct qfprom_priv {
+ void __iomem *base;
+};
+
static int qfprom_reg_read(void *context,
unsigned int reg, void *_val, size_t bytes)
{
- void __iomem *base = context;
+ struct qfprom_priv *priv = context;
u8 *val = _val;
int i = 0, words = bytes;
while (words--)
- *val++ = readb(base + reg + i++);
+ *val++ = readb(priv->base + reg + i++);
return 0;
}
@@ -33,12 +37,12 @@ static int qfprom_reg_read(void *context,
static int qfprom_reg_write(void *context,
unsigned int reg, void *_val, size_t bytes)
{
- void __iomem *base = context;
+ struct qfprom_priv *priv = context;
u8 *val = _val;
int i = 0, words = bytes;
while (words--)
- writeb(*val++, base + reg + i++);
+ writeb(*val++, priv->base + reg + i++);
return 0;
}
@@ -64,16 +68,20 @@ static int qfprom_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct resource *res;
struct nvmem_device *nvmem;
- void __iomem *base;
+ struct qfprom_priv *priv;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(dev, res);
- if (IS_ERR(base))
- return PTR_ERR(base);
+ priv->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
econfig.size = resource_size(res);
econfig.dev = dev;
- econfig.priv = base;
+ econfig.priv = priv;
nvmem = nvmem_register(&econfig);
if (IS_ERR(nvmem))

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