[PATCH 05/24] init: remove pointless Root_* values

Christoph Hellwig
2023-05-31T12:56:56Z

Remove all unused defines, and just use the expanded versions for
the SCSI disk majors.

I've decided to keep Root_RAM0 even if it could be expanded as there
is a lot of special casing for it in the init code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/alpha/kernel/setup.c | 2 +-
arch/ia64/kernel/setup.c | 2 +-
arch/powerpc/platforms/powermac/setup.c | 3 ++-
include/linux/root_dev.h | 8 --------
4 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 33bf3a62700270..b650ff1cb022ee 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -658,7 +658,7 @@ setup_arch(char **cmdline_p)
#endif

/* Default root filesystem to sda2. */
- ROOT_DEV = Root_SDA2;
+ ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 2);

#ifdef CONFIG_EISA
/* FIXME: only set this when we actually have EISA in this box? */
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index c0572804427275..becdb4f33c2195 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -627,7 +627,7 @@ setup_arch (char **cmdline_p)
* is physical disk 1 partition 1 and the Linux root disk is
* physical disk 1 partition 2.
*/
- ROOT_DEV = Root_SDA2; /* default to second partition on first drive */
+ ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 2);

if (is_uv_system())
uv_setup(cmdline_p);
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 193cc9c394221b..0c41f4b005bcf3 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -76,7 +76,8 @@ int pmac_newworld;

static int current_root_goodness = -1;

-#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */
+/* sda1 - slightly silly choice */
+#define DEFAULT_ROOT_DEVICE MKDEV(SCSI_DISK0_MAJOR, 1)

sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
EXPORT_SYMBOL(sys_ctrler);
diff --git a/include/linux/root_dev.h b/include/linux/root_dev.h
index 4e78651371ba92..ed3ea8da642972 100644
--- a/include/linux/root_dev.h
+++ b/include/linux/root_dev.h
@@ -10,14 +10,6 @@ enum {
Root_NFS = MKDEV(UNNAMED_MAJOR, 255),
Root_CIFS = MKDEV(UNNAMED_MAJOR, 254),
Root_RAM0 = MKDEV(RAMDISK_MAJOR, 0),
- Root_RAM1 = MKDEV(RAMDISK_MAJOR, 1),
- Root_FD0 = MKDEV(FLOPPY_MAJOR, 0),
- Root_HDA1 = MKDEV(IDE0_MAJOR, 1),
- Root_HDA2 = MKDEV(IDE0_MAJOR, 2),
- Root_SDA1 = MKDEV(SCSI_DISK0_MAJOR, 1),
- Root_SDA2 = MKDEV(SCSI_DISK0_MAJOR, 2),
- Root_HDC1 = MKDEV(IDE1_MAJOR, 1),
- Root_SR0 = MKDEV(SCSI_CDROM_MAJOR, 0),
};

extern dev_t ROOT_DEV;
--
2.39.2