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floppy: Replace custom SZ_64K constant

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There are only two headers using the K_64 custom constant. Moreover,
its usage tangles a code because the constant is defined in the C
file, while users are in the headers. Replace it with well defined
SZ_64K from sizes.h.

Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20250825163545.39303-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Andy Shevchenko
2025-08-25 18:32:56 +02:00
committed by Jens Axboe
parent d74968780b
commit 8e7ee0f6fa
3 changed files with 5 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/parisc/include/asm/floppy.h
View File

@@ -8,9 +8,9 @@
#ifndef __ASM_PARISC_FLOPPY_H
#define __ASM_PARISC_FLOPPY_H
#include <linux/sizes.h>
#include <linux/vmalloc.h>
/*
* The DMA channel used by the floppy controller cannot access data at
* addresses >= 16MB
@@ -20,7 +20,8 @@
* floppy accesses go through the track buffer.
*/
#define _CROSS_64KB(a,s,vdma) \
(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
(!(vdma) && \
((unsigned long)(a) / SZ_64K != ((unsigned long)(a) + (s) - 1) / SZ_64K))
#define SW fd_routine[use_virtual_dma&1]
#define CSW fd_routine[can_use_virtual_dma & 1]

3
arch/x86/include/asm/floppy.h
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@@ -10,6 +10,7 @@
#ifndef _ASM_X86_FLOPPY_H
#define _ASM_X86_FLOPPY_H
#include <linux/sizes.h>
#include <linux/vmalloc.h>
/*
@@ -22,7 +23,7 @@
*/
#define _CROSS_64KB(a, s, vdma) \
(!(vdma) && \
((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
((unsigned long)(a) / SZ_64K != ((unsigned long)(a) + (s) - 1) / SZ_64K))
#define SW fd_routine[use_virtual_dma & 1]
#define CSW fd_routine[can_use_virtual_dma & 1]

2
drivers/block/floppy.c
View File

@@ -233,8 +233,6 @@ static unsigned short virtual_dma_port = 0x3f0;
irqreturn_t floppy_interrupt(int irq, void *dev_id);
static int set_dor(int fdc, char mask, char data);
#define K_64 0x10000 /* 64KB */
/* the following is the mask of allowed drives. By default units 2 and
* 3 of both floppy controllers are disabled, because switching on the
* motor of these drives causes system hangs on some PCI computers. drive