Commit 5f88cf27 authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Greg Kroah-Hartman
Browse files

parport_pc: Add an ECR mask field for PCI devices 



Add a bitmask field specifying writable ECR bits for PCI devices and
apply it via `__parport_pc_probe_port'.

Signed-off-by: default avatarMaciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: default avatarSudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20230108215656.6433-5-sudipm.mukherjee@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 69e82463

drivers/parport/parport_pc.c

+6 −1
Original line number Diff line number Diff line
@@ -2662,6 +2662,10 @@ static struct parport_pc_pci { 
	/* Bit field of parport modes to exclude. */

	unsigned int mode_mask;



	/* If non-zero, sets the bitmask of writable ECR bits.  In that

	 * case additionally bit 0 will be forcibly set on writes. */

	unsigned char ecr_writable;



	/* If set, this is called immediately after pci_enable_device.

	 * If it returns non-zero, no probing will take place and the

	 * ports will not be used. */
@@ -2868,7 +2872,8 @@ static int parport_pc_pci_probe(struct pci_dev *dev, 
			__parport_pc_probe_port(io_lo, io_hi, irq,

						PARPORT_DMA_NONE, &dev->dev,

						IRQF_SHARED,

						cards[i].mode_mask, 0);

						cards[i].mode_mask,

						cards[i].ecr_writable);

		if (data->ports[count])

			count++;

	}