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pm80xx : Fix missing NULL pointer checks and memory leaks
Checking return value for the memory allocattion and freeing it while exiting the function Signed-off-by: Viswas G <Viswas.G@pmcs.com> Signed-off-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Acked-by: Jack Wang <xjtuwjp@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
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@ -395,6 +395,8 @@ static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
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payload.offset = 0;
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payload.length = 4096;
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payload.func_specific = kzalloc(4096, GFP_KERNEL);
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if (!payload.func_specific)
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return -ENOMEM;
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PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
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wait_for_completion(&completion);
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virt_addr = pm8001_ha->memoryMap.region[NVMD].virt_ptr;
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@ -402,6 +404,7 @@ static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
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bios_index++)
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str += sprintf(str, "%c",
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*((u8 *)((u8 *)virt_addr+bios_index)));
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kfree(payload.func_specific);
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return str - buf;
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}
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static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
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