On 01/05/2016 09:53 AM, Jes Sorensen wrote:
Julian Calaby <julian.calaby@xxxxxxxxx> writes:
Hi Sven,
On Tue, Jan 5, 2016 at 2:29 AM, Sven Dziadek <sven.dziadek@xxxxxx> wrote:
diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
index 1662c03c..57f5941 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
@@ -93,11 +93,9 @@ int FillH2CCmd(struct rtw_adapter *padapter, u8 ElementID, u32 CmdLen,
if (h2c_cmd & BIT(7)) {
msgbox_ex_addr = REG_HMEBOX_EXT_0 + (h2c_box_num * EX_MESSAGE_BOX_SIZE);
- h2c_cmd_ex = le16_to_cpu(h2c_cmd_ex);
rtl8723au_write16(padapter, msgbox_ex_addr, h2c_cmd_ex);
}
msgbox_addr = REG_HMEBOX_0 + (h2c_box_num * MESSAGE_BOX_SIZE);
- h2c_cmd = le32_to_cpu(h2c_cmd);
rtl8723au_write32(padapter, msgbox_addr, h2c_cmd);
While Jes has NACK'd this change, it does highlight that the h2c_cmd
and h2c_cmd_ex variables are being used to hold both cpu-endian and
little-endian data. A worthwhile change here might be to move the
conversion into the function call following these lines so that they
remain "clean".
That said, I'm not sure this particular snippet of code would work on
big-endian at all as I'm pretty sure that BIT() produces cpu-endian
values and we know from the line you remove that h2c_cmd is
little-endian at this point.
I am not opposed to cleaning it up, however I hope we can just remove
all of the code down the line instead. You may want to look at the h2c
implementation I did for rtl8xxxu. I believe it does work on big-endian,
at least I know Larry has been able to test it on big-endian systems.
I have tested rtl8xxxu for the RTL8192CU devices on a PowerBook G4 with a
big-endian processor.
I do not have any RTL8723AU devices that can be tested this way, thus I have no
idea if either of the drivers work on BE. If I were to guess, I would expect the
staging driver to fail and rtl8xxxu to work.
Larry
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