[PATCH 5.15 005/132] i2c: piix4: Replace hardcoded memory map size with a #define

Greg Kroah-Hartman
2022-05-23T17:30:08Z

From: Terry Bowman <terry.bowman@amd.com>

commit 93102cb449780f7b4eecf713451627b78373ce49 upstream.

Replace number constant with #define to improve readability and
maintainability.

Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Cc: Mario Limonciello <Mario.Limonciello@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i2c/busses/i2c-piix4.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)

--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -77,6 +77,7 @@

/* SB800 constants */
#define SB800_PIIX4_SMB_IDX 0xcd6
+#define SB800_PIIX4_SMB_MAP_SIZE 2

#define KERNCZ_IMC_IDX 0x3e
#define KERNCZ_IMC_DATA 0x3f
@@ -290,7 +291,8 @@ static int piix4_setup_sb800(struct pci_
else
smb_en = (aux) ? 0x28 : 0x2c;

- if (!request_muxed_region(SB800_PIIX4_SMB_IDX, 2, "sb800_piix4_smb")) {
+ if (!request_muxed_region(SB800_PIIX4_SMB_IDX, SB800_PIIX4_SMB_MAP_SIZE,
+ "sb800_piix4_smb")) {
dev_err(&PIIX4_dev->dev,
"SMB base address index region 0x%x already in use.\n",
SB800_PIIX4_SMB_IDX);
@@ -302,7 +304,7 @@ static int piix4_setup_sb800(struct pci_
outb_p(smb_en + 1, SB800_PIIX4_SMB_IDX);
smba_en_hi = inb_p(SB800_PIIX4_SMB_IDX + 1);

- release_region(SB800_PIIX4_SMB_IDX, 2);
+ release_region(SB800_PIIX4_SMB_IDX, SB800_PIIX4_SMB_MAP_SIZE);

if (!smb_en) {
smb_en_status = smba_en_lo & 0x10;
@@ -371,7 +373,8 @@ static int piix4_setup_sb800(struct pci_
piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT;
}
} else {
- if (!request_muxed_region(SB800_PIIX4_SMB_IDX, 2,
+ if (!request_muxed_region(SB800_PIIX4_SMB_IDX,
+ SB800_PIIX4_SMB_MAP_SIZE,
"sb800_piix4_smb")) {
release_region(piix4_smba, SMBIOSIZE);
return -EBUSY;
@@ -384,7 +387,7 @@ static int piix4_setup_sb800(struct pci_
SB800_PIIX4_PORT_IDX;
piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK;
piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT;
- release_region(SB800_PIIX4_SMB_IDX, 2);
+ release_region(SB800_PIIX4_SMB_IDX, SB800_PIIX4_SMB_MAP_SIZE);
}

dev_info(&PIIX4_dev->dev,
@@ -682,7 +685,8 @@ static s32 piix4_access_sb800(struct i2c
u8 port;
int retval;

- if (!request_muxed_region(SB800_PIIX4_SMB_IDX, 2, "sb800_piix4_smb"))
+ if (!request_muxed_region(SB800_PIIX4_SMB_IDX, SB800_PIIX4_SMB_MAP_SIZE,
+ "sb800_piix4_smb"))
return -EBUSY;

/* Request the SMBUS semaphore, avoid conflicts with the IMC */
@@ -758,7 +762,7 @@ static s32 piix4_access_sb800(struct i2c
piix4_imc_wakeup();

release:
- release_region(SB800_PIIX4_SMB_IDX, 2);
+ release_region(SB800_PIIX4_SMB_IDX, SB800_PIIX4_SMB_MAP_SIZE);
return retval;
}