From 86b368a5804d05a6508791f10ebabf7b779eb845 Mon Sep 17 00:00:00 2001 From: Peter Oberparleiter Date: Mon, 7 Nov 2005 00:59:08 -0800 Subject: [PATCH] [PATCH] s390: dasd diag inline assembly Future versions of gcc may remove initialization code for control blocks used by the diag250 inline assembly due to incompletely specified constraints. This may lead to erratic behavior. Fix the diag250 inline assembly constraints. Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/s390/block/dasd_diag.c | 16 ++++++++-------- drivers/s390/block/dasd_diag.h | 10 +++++----- 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 7478423b53b..9aa608f528e 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -6,7 +6,7 @@ * Bugreports.to..: * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 * - * $Revision: 1.49 $ + * $Revision: 1.50 $ */ #include @@ -67,9 +67,9 @@ static const u8 DASD_DIAG_CMS1[] = { 0xc3, 0xd4, 0xe2, 0xf1 };/* EBCDIC CMS1 */ static __inline__ int dia250(void *iob, int cmd) { - typedef struct { - char _[max(sizeof (struct dasd_diag_init_io), - sizeof (struct dasd_diag_rw_io))]; + typedef union { + struct dasd_diag_init_io init_io; + struct dasd_diag_rw_io rw_io; } addr_type; int rc; @@ -190,7 +190,7 @@ dasd_start_diag(struct dasd_ccw_req * cqr) private->iob.flags = DASD_DIAG_RWFLAG_ASYNC; private->iob.block_count = dreq->block_count; private->iob.interrupt_params = (addr_t) cqr; - private->iob.bio_list = __pa(dreq->bio); + private->iob.bio_list = dreq->bio; private->iob.flaga = DASD_DIAG_FLAGA_DEFAULT; cqr->startclk = get_clock(); @@ -394,14 +394,14 @@ dasd_diag_check_device(struct dasd_device *device) memset(&bio, 0, sizeof (struct dasd_diag_bio)); bio.type = MDSK_READ_REQ; bio.block_number = private->pt_block + 1; - bio.buffer = __pa(label); + bio.buffer = label; memset(&private->iob, 0, sizeof (struct dasd_diag_rw_io)); private->iob.dev_nr = rdc_data->dev_nr; private->iob.key = 0; private->iob.flags = 0; /* do synchronous io */ private->iob.block_count = 1; private->iob.interrupt_params = 0; - private->iob.bio_list = __pa(&bio); + private->iob.bio_list = &bio; private->iob.flaga = DASD_DIAG_FLAGA_DEFAULT; rc = dia250(&private->iob, RW_BIO); if (rc == 0 || rc == 3) @@ -529,7 +529,7 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req) memset(dbio, 0, sizeof (struct dasd_diag_bio)); dbio->type = rw_cmd; dbio->block_number = recid + 1; - dbio->buffer = __pa(dst); + dbio->buffer = dst; dbio++; dst += blksize; recid++; diff --git a/drivers/s390/block/dasd_diag.h b/drivers/s390/block/dasd_diag.h index b26eb28df4b..df31484d73a 100644 --- a/drivers/s390/block/dasd_diag.h +++ b/drivers/s390/block/dasd_diag.h @@ -6,7 +6,7 @@ * Bugreports.to..: * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 * - * $Revision: 1.7 $ + * $Revision: 1.8 $ */ #define MDSK_WRITE_REQ 0x01 @@ -78,7 +78,7 @@ struct dasd_diag_bio { u8 spare1[2]; u32 alet; blocknum_t block_number; - u64 buffer; + void *buffer; } __attribute__ ((packed, aligned(8))); struct dasd_diag_init_io { @@ -104,7 +104,7 @@ struct dasd_diag_rw_io { u32 alet; u8 spare3[4]; u64 interrupt_params; - u64 bio_list; + struct dasd_diag_bio *bio_list; u8 spare4[8]; } __attribute__ ((packed, aligned(8))); #else /* CONFIG_ARCH_S390X */ @@ -119,7 +119,7 @@ struct dasd_diag_bio { u16 spare1; blocknum_t block_number; u32 alet; - u32 buffer; + void *buffer; } __attribute__ ((packed, aligned(8))); struct dasd_diag_init_io { @@ -142,7 +142,7 @@ struct dasd_diag_rw_io { u8 spare2[2]; u32 block_count; u32 alet; - u32 bio_list; + struct dasd_diag_bio *bio_list; u32 interrupt_params; u8 spare3[20]; } __attribute__ ((packed, aligned(8))); -- 2.41.1