mxser: Use non-hybrid PCI devres API

mxser enables its PCI device with pcim_enable_device(). This,
implicitly, switches the function pci_request_region() into managed
mode, where it becomes a devres function.

The PCI subsystem wants to remove this hybrid nature from its
interfaces. To do so, users of the aforementioned combination of
functions must be ported to non-hybrid functions.

Replace the call to sometimes-managed pci_request_region() with one to
the always-managed pcim_request_region().

Signed-off-by: Philipp Stanner <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/mxser.c

···
 
 	/* io address */
 	ioaddress = pci_resource_start(pdev, 2);
-	retval = pci_request_region(pdev, 2, "mxser(IO)");
+	retval = pcim_request_region(pdev, 2, "mxser(IO)");
 	if (retval)
 		goto err_zero;
 
···
 
 	/* vector */
 	ioaddress = pci_resource_start(pdev, 3);
-	retval = pci_request_region(pdev, 3, "mxser(vector)");
+	retval = pcim_request_region(pdev, 3, "mxser(vector)");
 	if (retval)
 		goto err_zero;
 	brd->vector = ioaddress;