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iwlwifi: allow to zero SRAM

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Sending a NULL pointer to iwl_trans_write_mem allows now
to zero SRAM.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2013-01-09 11:37:59 +02:00 committed by Johannes Berg
parent b1cf1bc160
commit 01387ffd19
2 changed files with 4 additions and 2 deletions
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3
drivers/net/wireless/iwlwifi/iwl-trans.h
View File

@ -391,7 +391,8 @@ struct iwl_trans;
* @read_prph: read a DWORD from a periphery register
* @write_prph: write a DWORD to a periphery register
* @read_mem: read device's SRAM in DWORD
* @write_mem: write device's SRAM in DWORD
* @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory
* will be zeroed.
* @configure: configure parameters required by the transport layer from
* the op_mode. May be called several times before start_fw, can't be
* called after that.

3
drivers/net/wireless/iwlwifi/pcie/trans.c
View File

@ -815,7 +815,8 @@ static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr,
if (iwl_trans_grab_nic_access(trans, false)) {
iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr);
for (offs = 0; offs < dwords; offs++)
iwl_write32(trans, HBUS_TARG_MEM_WDAT, vals[offs]);
iwl_write32(trans, HBUS_TARG_MEM_WDAT,
vals ? vals[offs] : 0);
iwl_trans_release_nic_access(trans);
} else {
ret = -EBUSY;