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Subject[PATCH] rtlwifi: Use ffs in <foo>_phy_calculate_bit_shift
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Date
Remove the loop and use the generic ffs instead.

Signed-off-by: Joe Perches <joe@perches.com>
---
Just saw one by happenstance, might as well fix them all.

drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c | 18 ++++++------------
.../net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c | 8 ++------
drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c | 9 ++-------
drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c | 8 ++------
drivers/net/wireless/realtek/rtlwifi/rtl8192se/phy.c | 9 ++-------
.../wireless/realtek/rtlwifi/rtl8723com/phy_common.c | 8 ++------
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c | 18 ++++++------------
7 files changed, 22 insertions(+), 56 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c
index 38d4432767e8..9be032e8ec95 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c
@@ -16,7 +16,12 @@ static u32 _rtl88e_phy_rf_serial_read(struct ieee80211_hw *hw,
static void _rtl88e_phy_rf_serial_write(struct ieee80211_hw *hw,
enum radio_path rfpath, u32 offset,
u32 data);
-static u32 _rtl88e_phy_calculate_bit_shift(u32 bitmask);
+static u32 _rtl88e_phy_calculate_bit_shift(u32 bitmask)
+{
+ u32 i = ffs(bitmask);
+
+ return i ? i - 1 : 32;
+}
static bool _rtl88e_phy_bb8188e_config_parafile(struct ieee80211_hw *hw);
static bool _rtl88e_phy_config_mac_with_headerfile(struct ieee80211_hw *hw);
static bool phy_config_bb_with_headerfile(struct ieee80211_hw *hw,
@@ -208,17 +213,6 @@ static void _rtl88e_phy_rf_serial_write(struct ieee80211_hw *hw,
rfpath, pphyreg->rf3wire_offset, data_and_addr);
}

-static u32 _rtl88e_phy_calculate_bit_shift(u32 bitmask)
-{
- u32 i;
-
- for (i = 0; i <= 31; i++) {
- if (((bitmask >> i) & 0x1) == 1)
- break;
- }
- return i;
-}
-
bool rtl88e_phy_mac_config(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
index fc6c81291cf5..238b6e010769 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
@@ -145,13 +145,9 @@ EXPORT_SYMBOL(_rtl92c_phy_rf_serial_write);

u32 _rtl92c_phy_calculate_bit_shift(u32 bitmask)
{
- u32 i;
+ u32 i = ffs(bitmask);

- for (i = 0; i <= 31; i++) {
- if (((bitmask >> i) & 0x1) == 1)
- break;
- }
- return i;
+ return i ? i - 1 : 32;
}
EXPORT_SYMBOL(_rtl92c_phy_calculate_bit_shift);

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
index 87804325928a..e34d33e73e52 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
@@ -162,14 +162,9 @@ static u32 targetchnl_2g[TARGET_CHNL_NUM_2G] = {

static u32 _rtl92d_phy_calculate_bit_shift(u32 bitmask)
{
- u32 i;
-
- for (i = 0; i <= 31; i++) {
- if (((bitmask >> i) & 0x1) == 1)
- break;
- }
+ u32 i = ffs(bitmask);

- return i;
+ return i ? i - 1 : 32;
}

u32 rtl92d_phy_query_bb_reg(struct ieee80211_hw *hw, u32 regaddr, u32 bitmask)
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c
index f107a30a96f0..cc0bcaf13e96 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c
@@ -203,13 +203,9 @@ static void _rtl92ee_phy_rf_serial_write(struct ieee80211_hw *hw,

static u32 _rtl92ee_phy_calculate_bit_shift(u32 bitmask)
{
- u32 i;
+ u32 i = ffs(bitmask);

- for (i = 0; i <= 31; i++) {
- if (((bitmask >> i) & 0x1) == 1)
- break;
- }
- return i;
+ return i ? i - 1 : 32;
}

bool rtl92ee_phy_mac_config(struct ieee80211_hw *hw)
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192se/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192se/phy.c
index 3d482b8675e2..63283d9e7485 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192se/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192se/phy.c
@@ -16,14 +16,9 @@

static u32 _rtl92s_phy_calculate_bit_shift(u32 bitmask)
{
- u32 i;
-
- for (i = 0; i <= 31; i++) {
- if (((bitmask >> i) & 0x1) == 1)
- break;
- }
+ u32 i = ffs(bitmask);

- return i;
+ return i ? i - 1 : 32;
}

u32 rtl92s_phy_query_bb_reg(struct ieee80211_hw *hw, u32 regaddr, u32 bitmask)
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723com/phy_common.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723com/phy_common.c
index 097f21f6d35b..47b6c1aa36b0 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8723com/phy_common.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723com/phy_common.c
@@ -53,13 +53,9 @@ EXPORT_SYMBOL_GPL(rtl8723_phy_set_bb_reg);

u32 rtl8723_phy_calculate_bit_shift(u32 bitmask)
{
- u32 i;
+ u32 i = ffs(bitmask);

- for (i = 0; i <= 31; i++) {
- if (((bitmask >> i) & 0x1) == 1)
- break;
- }
- return i;
+ return i ? i - 1 : 32;
}
EXPORT_SYMBOL_GPL(rtl8723_phy_calculate_bit_shift);

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c
index 7832fae3d00f..e2af0b4a99df 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c
@@ -27,7 +27,12 @@ static u32 _rtl8821ae_phy_rf_serial_read(struct ieee80211_hw *hw,
static void _rtl8821ae_phy_rf_serial_write(struct ieee80211_hw *hw,
enum radio_path rfpath, u32 offset,
u32 data);
-static u32 _rtl8821ae_phy_calculate_bit_shift(u32 bitmask);
+static u32 _rtl8821ae_phy_calculate_bit_shift(u32 bitmask)
+{
+ u32 i = ffs(bitmask);
+
+ return i ? i - 1 : 32;
+}
static bool _rtl8821ae_phy_bb8821a_config_parafile(struct ieee80211_hw *hw);
/*static bool _rtl8812ae_phy_config_mac_with_headerfile(struct ieee80211_hw *hw);*/
static bool _rtl8821ae_phy_config_mac_with_headerfile(struct ieee80211_hw *hw);
@@ -272,17 +277,6 @@ static void _rtl8821ae_phy_rf_serial_write(struct ieee80211_hw *hw,
rfpath, pphyreg->rf3wire_offset, data_and_addr);
}

-static u32 _rtl8821ae_phy_calculate_bit_shift(u32 bitmask)
-{
- u32 i;
-
- for (i = 0; i <= 31; i++) {
- if (((bitmask >> i) & 0x1) == 1)
- break;
- }
- return i;
-}
-
bool rtl8821ae_phy_mac_config(struct ieee80211_hw *hw)
{
bool rtstatus = 0;

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