iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ata: pata_gayle: Stop using module_platform_driver_probe()

Browse Source 
On today's platforms the benefit of platform_driver_probe() isn't that
relevant any more. It allows to drop some code after booting (or module
loading) for .probe() and discard the .remove() function completely if
the driver is built-in. This typically saves a few 100k.

The downside of platform_driver_probe() is that the driver cannot be
bound and unbound at runtime which is ancient and so slightly
complicates testing. There are also thoughts to deprecate
platform_driver_probe() because it adds some complexity in the driver
core for little gain. Also many drivers don't use it correctly. This
driver for example misses to mark the driver struct with __ref which is
needed to suppress a (W=1) modpost warning.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
This commit is contained in:
Uwe Kleine-König 2023-11-05 16:00:37 +01:00 committed by Damien Le Moal
parent 36f10a914a
commit 0b2771dd52
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/ata/pata_gayle.c
View File

@ -124,7 +124,7 @@ static struct ata_port_operations pata_gayle_a4000_ops = {
.set_mode = pata_gayle_set_mode,
};
static int __init pata_gayle_init_one(struct platform_device *pdev)
static int pata_gayle_init_one(struct platform_device *pdev)
{
struct resource *res;
struct gayle_ide_platform_data *pdata;
@ -193,7 +193,7 @@ static int __init pata_gayle_init_one(struct platform_device *pdev)
return 0;
}
static int __exit pata_gayle_remove_one(struct platform_device *pdev)
static int pata_gayle_remove_one(struct platform_device *pdev)
{
struct ata_host *host = platform_get_drvdata(pdev);
@ -203,13 +203,14 @@ static int __exit pata_gayle_remove_one(struct platform_device *pdev)
}
static struct platform_driver pata_gayle_driver = {
.remove = __exit_p(pata_gayle_remove_one),
.probe = pata_gayle_init_one,
.remove = pata_gayle_remove_one,
.driver = {
.name = "amiga-gayle-ide",
},
};
module_platform_driver_probe(pata_gayle_driver, pata_gayle_init_one);
module_platform_driver(pata_gayle_driver);
MODULE_AUTHOR("Bartlomiej Zolnierkiewicz");
MODULE_DESCRIPTION("low-level driver for Amiga Gayle PATA");