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pata_platform: Document `pio_mask' module parameter

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Add MODULE_PARM_DESC documentation and a kernel-parameters.txt entry.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2103212023190.21463@angie.orcam.me.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Maciej W. Rozycki 2021-03-21 20:55:27 +01:00 committed by Jens Axboe
parent 426e2c6a2c
commit 6ddcec9547
2 changed files with 9 additions and 2 deletions
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7
Documentation/admin-guide/kernel-parameters.txt
View File

@ -3664,6 +3664,13 @@
By default set to 1 if CONFIG_PATA_WINBOND_VLB_MODULE,
0 otherwise.
pata_platform.pio_mask= [HW,LIBATA]
Format: <int>
Supported PIO mode mask. Set individual bits to allow
the use of the respective PIO modes. Bit 0 is for
mode 0, bit 1 is for mode 1, and so on. Mode 0 only
allowed by default.
pause_on_oops=
Halt all CPUs after the first oops has been printed for
the specified number of seconds. This is to be used if

4
drivers/ata/pata_platform.c
View File

@ -24,6 +24,8 @@
#define DRV_VERSION "1.2"
static int pio_mask = 1;
module_param(pio_mask, int, 0);
MODULE_PARM_DESC(pio_mask, "PIO modes supported, mode 0 only by default");
/*
* Provide our own set_mode() as we don't want to change anything that has
@ -233,8 +235,6 @@ static struct platform_driver pata_platform_driver = {
module_platform_driver(pata_platform_driver);
module_param(pio_mask, int, 0);
MODULE_AUTHOR("Paul Mundt");
MODULE_DESCRIPTION("low-level driver for platform device ATA");
MODULE_LICENSE("GPL");