xiaomi-sm8450/android_kernel_xiaomi_sm8450
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[S390] cio: kernel stack overflow.

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Use different kind of assignment to make sure gcc doesn't create code
that creates temp variables on the stack, assigns values to it and
copies the content of the whole temp variable to the destination.
This reduces stack usage of e.g. ccwgroup_driver_register from 976
to 48 bytes instead.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2006-08-30 14:33:35 +02:00
committed by Martin Schwidefsky
parent 8f61701bdf
commit 292888c81e
4 changed files with 22 additions and 37 deletions
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6
drivers/s390/cio/chsc.c
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@@ -1391,10 +1391,8 @@ new_channel_path(int chpid)
/* fill in status, etc. */
chp->id = chpid;
chp->state = 1;
chp->dev = (struct device) {
.parent = &css[0]->device,
.release = chp_release,
};
chp->dev.parent = &css[0]->device;
chp->dev.release = chp_release;
snprintf(chp->dev.bus_id, BUS_ID_SIZE, "chp0.%x", chpid);
/* Obtain channel path description and fill it in. */