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Do not change/get mode on a nonexisting device.

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This commit is contained in:
Søren Schmidt 2001-03-21 11:44:58 +00:00
parent 742f5bdd4c
commit 7154fc7c7b
1 changed files with 10 additions and 6 deletions
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16
sys/dev/ata/ata-all.c
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@ -343,8 +343,10 @@ ataioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
scp = device_get_softc(device);
if (!scp)
return ENXIO;
mode->mode[MASTER] = scp->mode[MASTER];
mode->mode[SLAVE] = scp->mode[SLAVE];
if (scp->dev_param[MASTER])
mode->mode[MASTER] = scp->mode[MASTER];
if (scp->dev_param[SLAVE])
mode->mode[SLAVE] = scp->mode[SLAVE];
break;
}
@ -358,12 +360,14 @@ ataioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
scp = device_get_softc(device);
if (!scp)
return ENXIO;
if (mode->mode[MASTER] >= 0)
if (scp->dev_param[MASTER] && mode->mode[MASTER] >= 0) {
ata_change_mode(scp, ATA_MASTER, mode->mode[MASTER]);
if (mode->mode[SLAVE] >= 0)
mode->mode[MASTER] = scp->mode[MASTER];
}
if (scp->dev_param[SLAVE] && mode->mode[SLAVE] >= 0) {
ata_change_mode(scp, ATA_SLAVE, mode->mode[SLAVE]);
mode->mode[MASTER] = scp->mode[MASTER];
mode->mode[SLAVE] = scp->mode[SLAVE];
mode->mode[SLAVE] = scp->mode[SLAVE];
}
break;
}