linux-kernel - [PATCH 02/10] floppy: cleanup: expand macro UFDCS

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Date:   Mon, 24 Feb 2020 22:23:44 +0100
From:   Willy Tarreau <w@....eu>
To:     Denis Efremov <efremov@...ux.com>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Willy Tarreau <w@....eu>
Subject: [PATCH 02/10] floppy: cleanup: expand macro UFDCS

This macro doesn't bring much value and only slightly obfuscates the
code by silently using local variable "drive", let's expand it.

Signed-off-by: Willy Tarreau <w@....eu>
---
 drivers/block/floppy.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 93e0840..182148a 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -313,7 +313,6 @@ static bool initialized;
 #define UDP	(&drive_params[drive])
 #define UDRS	(&drive_state[drive])
 #define UDRWE	(&write_errors[drive])
-#define UFDCS	(&fdc_state[FDC(drive)])
 
 #define PH_HEAD(floppy, head) (((((floppy)->stretch & 2) >> 1) ^ head) << 2)
 #define STRETCH(floppy)	((floppy)->stretch & FD_STRETCH)
@@ -3549,7 +3548,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
 	case FDRESET:
 		return user_reset_fdc(drive, (int)param, true);
 	case FDGETFDCSTAT:
-		outparam = UFDCS;
+		outparam = &fdc_state[FDC(drive)];
 		break;
 	case FDWERRORCLR:
 		memset(UDRWE, 0, sizeof(*UDRWE));
@@ -3833,7 +3832,7 @@ static int compat_getfdcstat(int drive,
 	struct floppy_fdc_state v;
 
 	mutex_lock(&floppy_mutex);
-	v = *UFDCS;
+	v = fdc_state[FDC(drive)];
 	mutex_unlock(&floppy_mutex);
 
 	memset(&v32, 0, sizeof(struct compat_floppy_fdc_state));
@@ -4062,8 +4061,8 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
 			buffer_track = -1;
 	}
 
-	if (UFDCS->rawcmd == 1)
-		UFDCS->rawcmd = 2;
+	if (fdc_state[FDC(drive)].rawcmd == 1)
+		fdc_state[FDC(drive)].rawcmd = 2;
 
 	if (!(mode & FMODE_NDELAY)) {
 		if (mode & (FMODE_READ|FMODE_WRITE)) {
-- 
2.9.0