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coresight: etm4x: Check every parameter used by dma_xx_coherent. 

The dma_alloc_coherent return an "void *" not an "void __iomen *".
It uses the wrong parameters when calls dma_free_coherent function.

The sparse tool output logs as the following:
coresight-tmc.c:199:23:    expected void *<noident>
coresight-tmc.c:199:23:    got void [noderef] <asn:2>*vaddr
coresight-tmc.c:336:30: warning: incorrect type in assignment
(different address spaces)
coresight-tmc.c:336:30:    expected char *buf
coresight-tmc.c:336:30:    got void [noderef] <asn:2>*
coresight-tmc.c:769:50: warning: incorrect type in argument 4
(different base types)
coresight-tmc.c:769:50:    expected unsigned long long
[unsigned] [usertype] dma_handle
coresight-tmc.c:769:50:    got restricted gfp_t

Signed-off-by: Eric Long <eric.long@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Long 2016-02-17 17:51:44 -07:00 committed by Greg Kroah-Hartman
parent bf16e5b8cd
commit 61390593f7
1 changed files with 2 additions and 2 deletions
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4
drivers/hwtracing/coresight/coresight-tmc.c
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@ -124,7 +124,7 @@ struct tmc_drvdata {
bool reading;
char *buf;
dma_addr_t paddr;
void __iomem *vaddr;
void *vaddr;
u32 size;
bool enable;
enum tmc_config_type config_type;
@ -766,7 +766,7 @@ err_misc_register:
err_devm_kzalloc:
if (drvdata->config_type == TMC_CONFIG_TYPE_ETR)
dma_free_coherent(dev, drvdata->size,
&drvdata->paddr, GFP_KERNEL);
drvdata->vaddr, drvdata->paddr);
return ret;
}