[PATCH v2 0/2] Staging: rts5208: rtsx_reset_chip style clean up

[PATCH v2 0/2] Staging: rts5208: rtsx_reset_chip style clean up

[Fabio Falzoi]

Clean up the code in rtsx_reset_chip function defining two new helper
functions rtsx_reset_aspm and rtsx_enable_pcie_intr.
Specifically, the following checkpatch warnings are corrected:
* PARENTHESIS_ALIGNMENT at rows 271, 302, 343 and 346
* LONG_LINE at rows 294, 313 and 315
* BRACES at rowa 320 and 351
This patch is inspired by the following post on LKML regarding another
clean up for rts5208 module:
http://www.spinics.net/lists/linux-driver-devel/msg55038.html

Changes in v2:
* rebased against staging-testing branch of staging driver development
tree

Fabio Falzoi (2):
  Staging: rts5208: helper function to manage aspm during reset
  Staging: rts5208: helper function to enable interrupts during reset

 drivers/staging/rts5208/rtsx_chip.c | 165 +++++++++++++++++++-----------------
 1 file changed, 87 insertions(+), 78 deletions(-)

-- 
2.1.1

[PATCH v2 1/2] Staging: rts5208: helper function to manage aspm during reset

[Fabio Falzoi]

Define the helper function rtsx_reset_aspm to shorten the
rtsx_reset_chip code and get rid of the LONG_LINE checkpatch warnings.

Signed-off-by: Fabio Falzoi <fabio.falzoi84@gmail.com>
---
 drivers/staging/rts5208/rtsx_chip.c | 70 +++++++++++++++++++++----------------
 1 file changed, 39 insertions(+), 31 deletions(-)

diff --git a/drivers/staging/rts5208/rtsx_chip.c b/drivers/staging/rts5208/rtsx_chip.c
index ffcf5de..ea6cfd1 100644
--- a/drivers/staging/rts5208/rtsx_chip.c
+++ b/drivers/staging/rts5208/rtsx_chip.c
@@ -227,6 +227,42 @@ static int rtsx_pre_handle_sdio_new(struct rtsx_chip *chip)
 }
 #endif
 
+static int rtsx_reset_aspm(struct rtsx_chip *chip)
+{
+	int ret;
+
+	if (chip->dynamic_aspm) {
+		if (!CHK_SDIO_EXIST(chip) || !CHECK_PID(chip, 0x5288))
+			return STATUS_SUCCESS;
+
+		ret = rtsx_write_cfg_dw(chip, 2, 0xC0, 0xFF,
+					chip->aspm_l0s_l1_en);
+		if (ret != STATUS_SUCCESS)
+			TRACE_RET(chip, STATUS_FAIL);
+
+		return STATUS_SUCCESS;
+	}
+
+	if (CHECK_PID(chip, 0x5208))
+		RTSX_WRITE_REG(chip, ASPM_FORCE_CTL, 0xFF, 0x3F);
+	ret = rtsx_write_config_byte(chip, LCTLR, chip->aspm_l0s_l1_en);
+	if (ret != STATUS_SUCCESS)
+		TRACE_RET(chip, STATUS_FAIL);
+
+	chip->aspm_level[0] = chip->aspm_l0s_l1_en;
+	if (CHK_SDIO_EXIST(chip)) {
+		chip->aspm_level[1] = chip->aspm_l0s_l1_en;
+		ret = rtsx_write_cfg_dw(chip, CHECK_PID(chip, 0x5288) ? 2 : 1,
+					0xC0, 0xFF, chip->aspm_l0s_l1_en);
+		if (ret != STATUS_SUCCESS)
+			TRACE_RET(chip, STATUS_FAIL);
+	}
+
+	chip->aspm_enabled = 1;
+
+	return STATUS_SUCCESS;
+}
+
 int rtsx_reset_chip(struct rtsx_chip *chip)
 {
 	int retval;
@@ -289,37 +325,9 @@ int rtsx_reset_chip(struct rtsx_chip *chip)
 
 	/* Enable ASPM */
 	if (chip->aspm_l0s_l1_en) {
-		if (chip->dynamic_aspm) {
-			if (CHK_SDIO_EXIST(chip) && CHECK_PID(chip, 0x5288)) {
-				retval = rtsx_write_cfg_dw(chip, 2, 0xC0, 0xFF,
-						chip->aspm_l0s_l1_en);
-				if (retval != STATUS_SUCCESS)
-					TRACE_RET(chip, STATUS_FAIL);
-			}
-		} else {
-			if (CHECK_PID(chip, 0x5208))
-				RTSX_WRITE_REG(chip, ASPM_FORCE_CTL,
-					       0xFF, 0x3F);
-
-			retval = rtsx_write_config_byte(chip, LCTLR,
-							chip->aspm_l0s_l1_en);
-			if (retval != STATUS_SUCCESS)
-				TRACE_RET(chip, STATUS_FAIL);
-
-			chip->aspm_level[0] = chip->aspm_l0s_l1_en;
-			if (CHK_SDIO_EXIST(chip)) {
-				chip->aspm_level[1] = chip->aspm_l0s_l1_en;
-				retval = rtsx_write_cfg_dw(chip,
-						CHECK_PID(chip, 0x5288) ? 2 : 1,
-						0xC0, 0xFF,
-						chip->aspm_l0s_l1_en);
-
-				if (retval != STATUS_SUCCESS)
-					TRACE_RET(chip, STATUS_FAIL);
-			}
-
-			chip->aspm_enabled = 1;
-		}
+		retval = rtsx_reset_aspm(chip);
+		if (retval != STATUS_SUCCESS)
+			TRACE_RET(chip, STATUS_FAIL);
 	} else {
 		if (chip->asic_code && CHECK_PID(chip, 0x5208)) {
 			retval = rtsx_write_phy_register(chip, 0x07, 0x0129);
-- 
2.1.1

[PATCH v2 2/2] Staging: rts5208: helper function to enable interrupts during reset

[Fabio Falzoi]

Define the helper function rtsx_enable_pcie_intr to shorten the
rtsx_reset_chip code and get rid of the LONG_LINE checkpatch warnings.

Signed-off-by: Fabio Falzoi <fabio.falzoi84@gmail.com>
---
 drivers/staging/rts5208/rtsx_chip.c | 95 +++++++++++++++++++------------------
 1 file changed, 48 insertions(+), 47 deletions(-)

diff --git a/drivers/staging/rts5208/rtsx_chip.c b/drivers/staging/rts5208/rtsx_chip.c
index ea6cfd1..9593d81 100644
--- a/drivers/staging/rts5208/rtsx_chip.c
+++ b/drivers/staging/rts5208/rtsx_chip.c
@@ -263,6 +263,51 @@ static int rtsx_reset_aspm(struct rtsx_chip *chip)
 	return STATUS_SUCCESS;
 }
 
+static int rtsx_enable_pcie_intr(struct rtsx_chip *chip)
+{
+	int ret;
+
+	if (!chip->asic_code || !CHECK_PID(chip, 0x5208)) {
+		rtsx_enable_bus_int(chip);
+		return STATUS_SUCCESS;
+	}
+
+	if (chip->phy_debug_mode) {
+		RTSX_WRITE_REG(chip, CDRESUMECTL, 0x77, 0);
+		rtsx_disable_bus_int(chip);
+	} else {
+		rtsx_enable_bus_int(chip);
+	}
+
+	if (chip->ic_version >= IC_VER_D) {
+		u16 reg;
+
+		ret = rtsx_read_phy_register(chip, 0x00, &reg);
+		if (ret != STATUS_SUCCESS)
+			TRACE_RET(chip, STATUS_FAIL);
+
+		reg &= 0xFE7F;
+		reg |= 0x80;
+		ret = rtsx_write_phy_register(chip, 0x00, reg);
+		if (ret != STATUS_SUCCESS)
+			TRACE_RET(chip, STATUS_FAIL);
+
+		ret = rtsx_read_phy_register(chip, 0x1C, &reg);
+		if (ret != STATUS_SUCCESS)
+			TRACE_RET(chip, STATUS_FAIL);
+
+		reg &= 0xFFF7;
+		ret = rtsx_write_phy_register(chip, 0x1C, reg);
+		if (ret != STATUS_SUCCESS)
+			TRACE_RET(chip, STATUS_FAIL);
+	}
+
+	if (chip->driver_first_load && (chip->ic_version < IC_VER_C))
+		rtsx_calibration(chip);
+
+	return STATUS_SUCCESS;
+}
+
 int rtsx_reset_chip(struct rtsx_chip *chip)
 {
 	int retval;
@@ -367,53 +412,9 @@ int rtsx_reset_chip(struct rtsx_chip *chip)
 
 	RTSX_WRITE_REG(chip, PERST_GLITCH_WIDTH, 0xFF, 0x80);
 
-	/* Enable PCIE interrupt */
-	if (chip->asic_code) {
-		if (CHECK_PID(chip, 0x5208)) {
-			if (chip->phy_debug_mode) {
-				RTSX_WRITE_REG(chip, CDRESUMECTL, 0x77, 0);
-				rtsx_disable_bus_int(chip);
-			} else {
-				rtsx_enable_bus_int(chip);
-			}
-
-			if (chip->ic_version >= IC_VER_D) {
-				u16 reg;
-
-				retval = rtsx_read_phy_register(chip, 0x00,
-								&reg);
-				if (retval != STATUS_SUCCESS)
-					TRACE_RET(chip, STATUS_FAIL);
-
-				reg &= 0xFE7F;
-				reg |= 0x80;
-				retval = rtsx_write_phy_register(chip, 0x00,
-								 reg);
-				if (retval != STATUS_SUCCESS)
-					TRACE_RET(chip, STATUS_FAIL);
-
-				retval = rtsx_read_phy_register(chip, 0x1C,
-								&reg);
-				if (retval != STATUS_SUCCESS)
-					TRACE_RET(chip, STATUS_FAIL);
-
-				reg &= 0xFFF7;
-				retval = rtsx_write_phy_register(chip, 0x1C,
-								 reg);
-				if (retval != STATUS_SUCCESS)
-					TRACE_RET(chip, STATUS_FAIL);
-			}
-
-			if (chip->driver_first_load &&
-			    (chip->ic_version < IC_VER_C))
-				rtsx_calibration(chip);
-
-		} else {
-			rtsx_enable_bus_int(chip);
-		}
-	} else {
-		rtsx_enable_bus_int(chip);
-	}
+	retval = rtsx_enable_pcie_intr(chip);
+	if (retval != STATUS_SUCCESS)
+		TRACE_RET(chip, STATUS_FAIL);
 
 	chip->need_reset = 0;
 
-- 
2.1.1

Re: [PATCH v2 0/2] Staging: rts5208: rtsx_reset_chip style clean up

[Dan Carpenter]

These look good to me.

Reviewed-by: Dan Carpenter <dan.carpente@oracle.com>

regards,
dan carpenter