Commit 423688ab authored Feb 16, 2018 by Frederic Barrat Committed by Michael Ellerman Feb 21, 2018

ocxl: Fix potential bad errno on irq allocation



Fix some issues found by a static checker:

When allocating an AFU interrupt, if the driver cannot copy the output
parameters to userland, the errno value was not set to EFAULT

Remove a (now) useless cast.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 521ca5a9

drivers/misc/ocxl/file.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -133,8 +133,10 @@ static long afu_ioctl(struct file *file, unsigned int cmd,
		if (!rc) {
		rc = copy_to_user((u64 __user *) args, &irq_offset,
		sizeof(irq_offset));
		if (rc)
		if (rc) {
		ocxl_afu_irq_free(ctx, irq_offset);
		return -EFAULT;
		}
		}
		break;

		@@ -329,7 +331,7 @@ static ssize_t afu_read(struct file file, char __user buf, size_t count,

		used += sizeof(header);

		rc = (ssize_t) used;
		rc = used;
		return rc;
		}