diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/block/dasd_devmap.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 66958b8d7c4..6a89cefe99b 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -19,6 +19,7 @@ #include <asm/debug.h> #include <asm/uaccess.h> +#include <asm/ipl.h> /* This is ugly... */ #define PRINTK_HEADER "dasd_devmap:" @@ -133,6 +134,8 @@ dasd_call_setup(char *str) __setup ("dasd=", dasd_call_setup); #endif /* #ifndef MODULE */ +#define DASD_IPLDEV "ipldev" + /* * Read a device busid/devno from a string. */ @@ -141,6 +144,20 @@ dasd_busid(char **str, int *id0, int *id1, int *devno) { int val, old_style; + /* Interpret ipldev busid */ + if (strncmp(DASD_IPLDEV, *str, strlen(DASD_IPLDEV)) == 0) { + if (ipl_info.type != IPL_TYPE_CCW) { + MESSAGE(KERN_ERR, "%s", "ipl device is not a ccw " + "device"); + return -EINVAL; + } + *id0 = 0; + *id1 = ipl_info.data.ccw.dev_id.ssid; + *devno = ipl_info.data.ccw.dev_id.devno; + *str += strlen(DASD_IPLDEV); + + return 0; + } /* check for leading '0x' */ old_style = 0; if ((*str)[0] == '0' && (*str)[1] == 'x') { |