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| author | Sebastian Ott <sebott@linux.ibm.com> | 2018-06-25 15:25:59 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-07-17 08:27:56 +0300 |
| commit | ccaabeea02026e1fbf9274800e43d9135914cd72 (patch) | |
| tree | 9119ff27b6d91786b6bd6ad25732e582dcf3e387 /drivers/s390/cio/chsc.c | |
| parent | d4f5d79e97ca6e903700d3d9455afb5694cc4833 (diff) | |
| download | linux-ccaabeea02026e1fbf9274800e43d9135914cd72.tar.xz | |
s390/chsc: fix packed-not-aligned warnings
Remove attribute packed where possible failing this add proper alignment
information to fix warnings like the one below:
drivers/s390/cio/chsc.c: In function 'chsc_siosl':
drivers/s390/cio/chsc.c:1287:2: warning: alignment 1 of 'struct <anonymous>' is less than 4 [-Wpacked-not-aligned]
} __attribute__ ((packed)) *siosl_area;
Note: this patch should be a nop since non of these structs use auto
storage but allocated pages. However there are changes to the generated
code because of additional padding at the end of some of the structs due
to alignment when memset(foo, 0, sizeof(*foo)) is used.
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chsc.c')
| -rw-r--r-- | drivers/s390/cio/chsc.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 9029804dcd22..a0baee25134c 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -91,7 +91,7 @@ struct chsc_ssd_area { u16 sch; /* subchannel */ u8 chpid[8]; /* chpids 0-7 */ u16 fla[8]; /* full link addresses 0-7 */ -} __attribute__ ((packed)); +} __packed __aligned(PAGE_SIZE); int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd) { @@ -319,7 +319,7 @@ struct chsc_sei { struct chsc_sei_nt2_area nt2_area; u8 nt_area[PAGE_SIZE - 24]; } u; -} __packed; +} __packed __aligned(PAGE_SIZE); /* * Node Descriptor as defined in SA22-7204, "Common I/O-Device Commands" @@ -841,7 +841,7 @@ int __chsc_do_secm(struct channel_subsystem *css, int enable) u32 : 4; u32 fmt : 4; u32 : 16; - } __attribute__ ((packed)) *secm_area; + } *secm_area; unsigned long flags; int ret, ccode; @@ -1014,7 +1014,7 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp) u32 cmg : 8; u32 zeroes3; u32 data[NR_MEASUREMENT_CHARS]; - } __attribute__ ((packed)) *scmc_area; + } *scmc_area; chp->shared = -1; chp->cmg = -1; @@ -1142,7 +1142,7 @@ int __init chsc_get_cssid(int idx) u8 cssid; u32 : 24; } list[0]; - } __packed *sdcal_area; + } *sdcal_area; int ret; spin_lock_irq(&chsc_page_lock); @@ -1192,7 +1192,7 @@ chsc_determine_css_characteristics(void) u32 reserved4; u32 general_char[510]; u32 chsc_char[508]; - } __attribute__ ((packed)) *scsc_area; + } *scsc_area; spin_lock_irqsave(&chsc_page_lock, flags); memset(chsc_page, 0, PAGE_SIZE); @@ -1236,7 +1236,7 @@ int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta) unsigned int rsvd3[3]; u64 clock_delta; unsigned int rsvd4[2]; - } __attribute__ ((packed)) *rr; + } *rr; int rc; memset(page, 0, PAGE_SIZE); @@ -1261,7 +1261,7 @@ int chsc_sstpi(void *page, void *result, size_t size) unsigned int rsvd0[3]; struct chsc_header response; char data[]; - } __attribute__ ((packed)) *rr; + } *rr; int rc; memset(page, 0, PAGE_SIZE); @@ -1284,7 +1284,7 @@ int chsc_siosl(struct subchannel_id schid) u32 word3; struct chsc_header response; u32 word[11]; - } __attribute__ ((packed)) *siosl_area; + } *siosl_area; unsigned long flags; int ccode; int rc; |