After handling command response, cmd skb is inserted into command
free queue(which keeps track of availabile skbs) for reuse purpose.
Skb length is not getting reset to zero here. This patch takes care
of it.
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In some cases local pointers are used to cast void pointers passed to
the function. Those unnecessary local pointers are also removed.

This patch was inspired by Joe Perches' patch
[PATCH net-next 1/2] wireless: Remove casts of void *;
and the comments from Julian Calaby.
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Cc: Joe Perches <joe@perches.com>
Cc: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The function
- increments dropped rx_packet count if status code
  passed to it is "-1".
- frees SKB buffer.

But currently the function is being called with "0" status code.
This patch replaces above function by dev_kfree_skb_any() call.
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The structure definition is
struct mwifiex_opt_sleep_confirm_buffer {
       u8 hdr[4];
       struct mwifiex_opt_sleep_confirm ps_cfm_sleep;
} __packed;

For sleep_confirm command we already reserve 4 bytes (using skb_reserve())
for an interface header. It will be filled later by interface specific code.
We don't need "hdr[4]" element in above structure. So we can use
"struct mwifiex_opt_sleep_confirm" directly instead of
"struct mwifiex_opt_sleep_confirm_buffer".
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch:
 - adds kfree() where necessary
 - prevents potential null dereferences
 - makes use of kfree_skb()
 - replaces -1 for failed kzallocs with -ENOMEM
Signed-off-by: NChristoph Fritz <chf.fritz@googlemail.com>
Reviewed-by: NKiran Divekar <dkiran@marvell.com>
Tested-by: NAmitkumar Karwar <akarwar@marvell.com>
Acked-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Skip initialization of local variables with some default values
if the values are not going to be used further down the code path.
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The return statement at the last line of a void function
is not necessary.
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

1) remove mwifiex_alloc_fill_wait_queue() and
mwifiex_request_ioctl()
2) avoid dynamic allocation of wait queue
3) remove unnecessary mwifiex_error_code macros that
were used mainly by the wait queue status code
4) remove some abstraction functions
5) split mwifiex_prepare_cmd() to mwifiex_send_cmd_async()
and mwifiex_send_sync() to handle asynchronous and
synchronous commands respectively
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Before calling host_to_card() to send the cmd to firmware,
we use skb_push() to add 4 bytes SDIO interface header at
the start of the data buffer. Since cmd_skb data structure
will be re-used at a later time, we need to restore its
headroom by removing the 4 bytes header.
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NMarc Yang <yangyang@marvell.com>
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

remove redundant structures and unused macros
Signed-off-by: NMarc Yang <yangyang@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The hw_dot_11n_dev_cap reported by firmware hw_spec
has different format than the 11n capabilities.
Hence a lot of SET_ and RESET_ bit operation macros
were used to convert the dev_cap format to 11n
capability format. However the locally defined 11n
ht_cap macros are not necessary as we can use
IEEE80211_HT_CAP_ macros directly.

The 32-bit dev_cap bitmap is added as comment to
explain the mapping between firmware and 11n spec.

Some unused macros and unnecessary adapter variables
are also removed.
Signed-off-by: NMarc Yang <yangyang@marvell.com>
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

'iw list' is sufficient to retrieve the information which
was displayed by these functions.
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This driver adds WiFi support for Marvell 802.11n based chipsets
with SDIO interface. Currently only SD8787 is supported. More
chipsets will be supported later.

drivers/net/wireless/mwifiex/
Signed-off-by: NNishant Sarmukadam <nishants@marvell.com>
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NKiran Divekar <dkiran@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NMarc Yang <yangyang@marvell.com>
Signed-off-by: NRamesh Radhakrishnan <rramesh@marvell.com>
Signed-off-by: NFrank Huang <frankh@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>