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s390/sclp: clean up, use sccb_mask_t where appropriate 

Replace hardcoded instances where 32 or unsigned int (or long) is used
for SCLP event masks, and replace with sizeof(sccb_mask_t) and
sccb_mask_t respectively.

This improves readability and prepares for when we will increase
sccb_mask_t to 64 bits.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Claudio Imbrenda 2018-01-23 15:07:09 +01:00 committed by Martin Schwidefsky
parent ddc1c94535
commit 0ee5f8dcd6
3 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/s390/char/sclp.c
View File

@ -417,7 +417,7 @@ sclp_dispatch_evbufs(struct sccb_header *sccb)
reg = NULL;
list_for_each(l, &sclp_reg_list) {
reg = list_entry(l, struct sclp_register, list);
if (reg->receive_mask & (1 << (32 - evbuf->type)))
if (reg->receive_mask & SCLP_EVTYP_MASK(evbuf->type))
break;
else
reg = NULL;
@ -748,7 +748,7 @@ EXPORT_SYMBOL(sclp_remove_processed);
/* Prepare init mask request. Called while sclp_lock is locked. */
static inline void
__sclp_make_init_req(u32 receive_mask, u32 send_mask)
__sclp_make_init_req(sccb_mask_t receive_mask, sccb_mask_t send_mask)
{
struct init_sccb *sccb;
@ -761,7 +761,7 @@ __sclp_make_init_req(u32 receive_mask, u32 send_mask)
sclp_init_req.callback = NULL;
sclp_init_req.callback_data = NULL;
sclp_init_req.sccb = sccb;
sccb->header.length = sizeof(struct init_sccb);
sccb->header.length = sizeof(*sccb);
sccb->mask_length = sizeof(sccb_mask_t);
sccb->receive_mask = receive_mask;
sccb->send_mask = send_mask;

6
drivers/s390/char/sclp.h
View File

@ -18,7 +18,7 @@
#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
#define SCLP_CONSOLE_PAGES 6
#define SCLP_EVTYP_MASK(T) (1U << (32 - (T)))
#define SCLP_EVTYP_MASK(T) (1UL << (sizeof(sccb_mask_t) * BITS_PER_BYTE - (T)))
#define EVTYP_OPCMD 0x01
#define EVTYP_MSG 0x02
@ -230,8 +230,8 @@ void sclp_early_wait_irq(void);
int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb);
unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb);
int sclp_early_set_event_mask(struct init_sccb *sccb,
unsigned long receive_mask,
unsigned long send_mask);
sccb_mask_t receive_mask,
sccb_mask_t send_mask);
/* useful inlines */

4
drivers/s390/char/sclp_early_core.c
View File

@ -142,8 +142,8 @@ static void sclp_early_print_vt220(const char *str, unsigned int len)
}
int sclp_early_set_event_mask(struct init_sccb *sccb,
unsigned long receive_mask,
unsigned long send_mask)
sccb_mask_t receive_mask,
sccb_mask_t send_mask)
{
memset(sccb, 0, sizeof(*sccb));
sccb->header.length = sizeof(*sccb);