ide: /proc/ide/hd*/settings rework
* Add struct ide_devset, S_* flags, *DEVSET() & ide*_devset_*() macros.
* Add 'const struct ide_devset **settings' to ide_driver_t.
* Use 'const struct ide_devset **settings' in ide_drive_t instead of
'struct ide_settings_s *settings'. Then convert core code and device
drivers to use struct ide_devset and co.:
- device settings are no longer allocated dynamically for each device
but instead there is an unique struct ide_devset instance per setting
- device driver keeps the pointer to the table of pointers to its
settings in ide_driver_t.settings
- generic settings are kept in ide_generic_setting[]
- ide_proc_[un]register_driver(), ide_find_setting_by_name(),
ide_{read,write}_setting() and proc_ide_{read,write}_settings()
are updated accordingly
- ide*_add_settings() are removed
* Remove no longer used __ide_add_setting(), ide_add_setting(),
__ide_remove_setting() and auto_remove_settings().
* Remove no longer used TYPE_*, SETTING_*, ide_procset_t
and ide_settings_t.
* ->keep_settings, ->using_dma, ->unmask, ->noflush, ->dsc_overlap,
->nice1, ->addressing, ->wcache and ->nowerr ide_drive_t fields
can now be bitfield flags.
While at it:
* Rename ide_find_setting_by_name() to ide_find_setting().
* Rename write_wcache() to set_wcache().
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 8e0c9f2..eb64e94 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -287,6 +287,8 @@
EXPORT_SYMBOL(ide_spin_wait_hwgroup);
+ide_devset_get(io_32bit, io_32bit);
+
int set_io_32bit(ide_drive_t *drive, int arg)
{
if (drive->no_io_32bit)
@@ -305,6 +307,8 @@
return 0;
}
+ide_devset_get(ksettings, keep_settings);
+
int set_ksettings(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 1)
@@ -318,6 +322,8 @@
return 0;
}
+ide_devset_get(using_dma, using_dma);
+
int set_using_dma(ide_drive_t *drive, int arg)
{
#ifdef CONFIG_BLK_DEV_IDEDMA
@@ -394,6 +400,8 @@
return 0;
}
+ide_devset_get(unmaskirq, unmask);
+
int set_unmaskirq(ide_drive_t *drive, int arg)
{
if (drive->no_unmask)
@@ -555,14 +563,13 @@
{
unsigned long flags;
ide_driver_t *drv;
- int err = 0, (*setfunc)(ide_drive_t *, int);
- u8 *val;
+ int err = 0, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int);
switch (cmd) {
- case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
- case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
- case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
- case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
+ case HDIO_GET_32BIT: getfunc = get_io_32bit; goto read_val;
+ case HDIO_GET_KEEPSETTINGS: getfunc = get_ksettings; goto read_val;
+ case HDIO_GET_UNMASKINTR: getfunc = get_unmaskirq; goto read_val;
+ case HDIO_GET_DMA: getfunc = get_using_dma; goto read_val;
case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
@@ -638,7 +645,7 @@
read_val:
mutex_lock(&ide_setting_mtx);
spin_lock_irqsave(&ide_lock, flags);
- err = *val;
+ err = getfunc(drive);
spin_unlock_irqrestore(&ide_lock, flags);
mutex_unlock(&ide_setting_mtx);
return err >= 0 ? put_user(err, (long __user *)arg) : err;