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[SCSI] arcmsr: fix message allocation 

arcmsr_iop_message_xfer() is called from atomic context under the
queuecommand scsi_host_template handler. James Bottomley pointed out
that the current GFP_KERNEL|GFP_DMA flags are wrong: firstly we are in
atomic context, secondly this memory is not used for DMA.
Also removed some unneeded casts.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Cc: Nick Cheng <nick.cheng@areca.com.tw>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Daniel Drake 2008-02-20 13:29:05 +00:00 committed by James Bottomley
parent ad008d42bc
commit 69e562c234
1 changed files with 11 additions and 15 deletions
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26
drivers/scsi/arcmsr/arcmsr_hba.c
View File

@ -1387,18 +1387,16 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
switch(controlcode) {
case ARCMSR_MESSAGE_READ_RQBUFFER: {
unsigned long *ver_addr;
unsigned char *ver_addr;
uint8_t *pQbuffer, *ptmpQbuffer;
int32_t allxfer_len = 0;
void *tmp;
tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
ver_addr = (unsigned long *)tmp;
if (!tmp) {
ver_addr = kmalloc(1032, GFP_ATOMIC);
if (!ver_addr) {
retvalue = ARCMSR_MESSAGE_FAIL;
goto message_out;
}
ptmpQbuffer = (uint8_t *) ver_addr;
ptmpQbuffer = ver_addr;
while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
&& (allxfer_len < 1031)) {
pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
@ -1427,26 +1425,24 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
}
arcmsr_iop_message_read(acb);
}
memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len);
memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
pcmdmessagefld->cmdmessage.Length = allxfer_len;
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
kfree(tmp);
kfree(ver_addr);
}
break;
case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
unsigned long *ver_addr;
unsigned char *ver_addr;
int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
uint8_t *pQbuffer, *ptmpuserbuffer;
void *tmp;
tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
ver_addr = (unsigned long *)tmp;
if (!tmp) {
ver_addr = kmalloc(1032, GFP_ATOMIC);
if (!ver_addr) {
retvalue = ARCMSR_MESSAGE_FAIL;
goto message_out;
}
ptmpuserbuffer = (uint8_t *)ver_addr;
ptmpuserbuffer = ver_addr;
user_len = pcmdmessagefld->cmdmessage.Length;
memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
wqbuf_lastindex = acb->wqbuf_lastindex;
@ -1492,7 +1488,7 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
retvalue = ARCMSR_MESSAGE_FAIL;
}
}
kfree(tmp);
kfree(ver_addr);
}
break;