Author: tsoome
Date: Thu Aug 16 07:13:36 2018
New Revision: 337891
URL: https://svnweb.freebsd.org/changeset/base/337891
Log:
libi386: bd_io_workaround() is to be called for reads only
bd_io() can perform either reads or writes, we only need bd_io_workaround()
for reads.
Modified:
head/stand/i386/libi386/biosdisk.c
Modified: head/stand/i386/libi386/biosdisk.c
==============================================================================
--- head/stand/i386/libi386/biosdisk.c Thu Aug 16 06:50:53 2018
(r337890)
+++ head/stand/i386/libi386/biosdisk.c Thu Aug 16 07:13:36 2018
(r337891)
@@ -601,7 +601,7 @@ bd_io_workaround(struct disk_devdesc *dev)
{
uint8_t buf[8 * 1024];
- bd_edd_io(dev, 0xffffffff, 1, (caddr_t)buf, 0);
+ bd_edd_io(dev, 0xffffffff, 1, (caddr_t)buf, BD_RD);
}
@@ -628,7 +628,7 @@ bd_io(struct disk_devdesc *dev, daddr_t dblk, int blks
* the buggy read. It is not immediately known whether other models
* are similarly affected.
*/
- if (dblk >= 0x100000000)
+ if (dowrite == BD_RD && dblk >= 0x100000000)
bd_io_workaround(dev);
/* Decide whether we have to bounce */
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