drivers: Warning fixes to disable CC_OPTIMIZE_FOR_SIZE

These are all driver changes needed for disablement of
CONFIG_CC_OPTIMIZE_FOR_SIZE. CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
is enabled by default once CONFIG_CC_OPTIMIZE_FOR_SIZE is disabled.

Change-Id: Ia46a1f24e8a082a29ea6151e41e6d3a85a05fd4f
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Sridhar Parasuram <sridhar@codeaurora.org>

26 files changed, 40 insertions, 38 deletions

diff --git a/drivers/bluetooth/bluetooth-power.c b/drivers/bluetooth/bluetooth-power.c
index 59245ba320f6..99c18e3d66d7 100644
--- a/drivers/bluetooth/bluetooth-power.c
+++ b/drivers/bluetooth/bluetooth-power.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2009-2010, 2013-2016 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2009-2010, 2013-2017 The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -682,7 +682,7 @@ int bt_register_slimdev(struct device *dev)
 
 static long bt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-	int ret, pwr_cntrl = 0;
+	int ret = 0, pwr_cntrl = 0;
 
 	switch (cmd) {
 	case BT_CMD_SLIM_TEST:
diff --git a/drivers/bluetooth/btfm_slim_codec.c b/drivers/bluetooth/btfm_slim_codec.c
index 4dd8e6833ccf..3453cf507626 100644
--- a/drivers/bluetooth/btfm_slim_codec.c
+++ b/drivers/bluetooth/btfm_slim_codec.c
@@ -293,9 +293,9 @@ static int btfm_slim_dai_get_channel_map(struct snd_soc_dai *dai,
 				 unsigned int *tx_num, unsigned int *tx_slot,
 				 unsigned int *rx_num, unsigned int *rx_slot)
 {
-	int i, ret = -EINVAL, *slot, j = 0, num = 1;
+	int i, ret = -EINVAL, *slot = NULL, j = 0, num = 1;
 	struct btfmslim *btfmslim = dai->dev->platform_data;
-	struct btfmslim_ch *ch;
+	struct btfmslim_ch *ch = NULL;
 
 	if (!btfmslim)
 		return ret;
diff --git a/drivers/clk/msm/clock-osm.c b/drivers/clk/msm/clock-osm.c
index 9d9aa61c480a..7cc1c56a2090 100644
--- a/drivers/clk/msm/clock-osm.c
+++ b/drivers/clk/msm/clock-osm.c
@@ -1541,8 +1541,8 @@ static int clk_osm_setup_hw_table(struct clk_osm *c)
 {
 	struct osm_entry *entry = c->osm_table;
 	int i;
-	u32 freq_val, volt_val, override_val, spare_val;
-	u32 table_entry_offset, last_spare, last_virtual_corner = 0;
+	u32 freq_val = 0, volt_val = 0, override_val = 0, spare_val = 0;
+	u32 table_entry_offset = 0, last_spare = 0, last_virtual_corner = 0;
 
 	for (i = 0; i < OSM_TABLE_SIZE; i++) {
 		if (i < c->num_entries) {
@@ -2758,7 +2758,7 @@ static ssize_t debugfs_trace_method_get(struct file *file, char __user *buf,
 					size_t count, loff_t *ppos)
 {
 	struct clk_osm *c = file->private_data;
-	int len, rc;
+	int len = 0, rc;
 
 	if (IS_ERR(file) || file == NULL) {
 		pr_err("input error %ld\n", PTR_ERR(file));
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 16a7b6816744..8decab2a9cce 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -597,7 +597,7 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
 	int idx, i;
 
 	for (i = 0, idx = 0; idx <= index; i++) {
-		struct acpi_gpio_info info;
+		struct acpi_gpio_info info = {0, 0};
 		struct gpio_desc *desc;
 
 		desc = acpi_get_gpiod_by_index(adev, NULL, i, &info);
diff --git a/drivers/leds/leds-qpnp-flash-v2.c b/drivers/leds/leds-qpnp-flash-v2.c
index 1a6cad946a25..d574facf016a 100644
--- a/drivers/leds/leds-qpnp-flash-v2.c
+++ b/drivers/leds/leds-qpnp-flash-v2.c
@@ -687,7 +687,8 @@ static int qpnp_flash_led_get_voltage_headroom(struct qpnp_flash_led *led)
 #define VIN_FLASH_MIN_UV	3300000LL
 static int qpnp_flash_led_calc_max_current(struct qpnp_flash_led *led)
 {
-	int ocv_uv, rbatt_uohm, ibat_now, voltage_hdrm_mv, rc;
+	int ocv_uv = 0, rbatt_uohm = 0, ibat_now = 0, voltage_hdrm_mv = 0;
+	int rc = 0;
 	int64_t ibat_flash_ua, avail_flash_ua, avail_flash_power_fw;
 	int64_t ibat_safe_ua, vin_flash_uv, vph_flash_uv, vph_flash_vdip;
 
diff --git a/drivers/md/dm-android-verity.c b/drivers/md/dm-android-verity.c
index 7cef735a01a7..4f6086970131 100644
--- a/drivers/md/dm-android-verity.c
+++ b/drivers/md/dm-android-verity.c
@@ -691,7 +691,7 @@ static int android_verity_ctr(struct dm_target *ti, unsigned argc, char **argv)
 	dev_t uninitialized_var(dev);
 	struct android_metadata *metadata = NULL;
 	int err = 0, i, mode;
-	char *key_id, *table_ptr, dummy, *target_device,
+	char *key_id = NULL, *table_ptr, dummy, *target_device,
 	*verity_table_args[VERITY_TABLE_ARGS + 2 + VERITY_TABLE_OPT_FEC_ARGS];
 	/* One for specifying number of opt args and one for mode */
 	sector_t data_sectors;
diff --git a/drivers/media/platform/msm/camera_v2/isp/msm_isp_axi_util.c b/drivers/media/platform/msm/camera_v2/isp/msm_isp_axi_util.c
index f9809615b407..f8dd3e39514c 100644
--- a/drivers/media/platform/msm/camera_v2/isp/msm_isp_axi_util.c
+++ b/drivers/media/platform/msm/camera_v2/isp/msm_isp_axi_util.c
@@ -1259,7 +1259,7 @@ void msm_isp_get_avtimer_ts(
 
 int msm_isp_request_axi_stream(struct vfe_device *vfe_dev, void *arg)
 {
-	int rc = 0, i;
+	int rc = 0, i = 0;
 	uint32_t io_format = 0;
 	struct msm_vfe_axi_stream_request_cmd *stream_cfg_cmd = arg;
 	struct msm_vfe_axi_stream *stream_info;
@@ -1395,7 +1395,7 @@ done:
 
 int msm_isp_release_axi_stream(struct vfe_device *vfe_dev, void *arg)
 {
-	int rc = 0, i;
+	int rc = 0, i = 0;
 	struct msm_vfe_axi_stream_release_cmd *stream_release_cmd = arg;
 	struct msm_vfe_axi_stream *stream_info;
 	struct msm_vfe_axi_stream_cfg_cmd stream_cfg;
diff --git a/drivers/media/platform/msm/sde/rotator/sde_rotator_r1.c b/drivers/media/platform/msm/sde/rotator/sde_rotator_r1.c
index 5b574ed9fabc..9e3d7d806a0c 100644
--- a/drivers/media/platform/msm/sde/rotator/sde_rotator_r1.c
+++ b/drivers/media/platform/msm/sde/rotator/sde_rotator_r1.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -145,7 +145,7 @@ static struct sde_mdp_hw_resource *sde_rotator_hw_alloc(
 	struct sde_mdp_hw_resource *mdp_hw;
 	struct sde_rot_data_type *mdata = sde_rot_get_mdata();
 	int pipe_ndx, offset = ctl_id;
-	int ret;
+	int ret = 0;
 
 	mdp_hw = devm_kzalloc(&mgr->pdev->dev,
 			sizeof(struct sde_mdp_hw_resource), GFP_KERNEL);
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index e9f1a19dfe3f..73b269cc7121 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1017,7 +1017,7 @@ static int mmc_blk_ioctl_rpmb_cmd(struct block_device *bdev,
 {
 	struct mmc_blk_ioc_rpmb_data *idata;
 	struct mmc_blk_data *md;
-	struct mmc_card *card;
+	struct mmc_card *card = NULL;
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct mmc_request mrq = {NULL};
diff --git a/drivers/power/qcom/debug_core.c b/drivers/power/qcom/debug_core.c
index ccef04ae9eb2..51b6d63fe994 100644
--- a/drivers/power/qcom/debug_core.c
+++ b/drivers/power/qcom/debug_core.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -288,8 +288,8 @@ static const struct file_operations msm_core_ptable_ops = {
 
 int msm_core_debug_init(void)
 {
-	struct dentry *dir;
-	struct dentry *file;
+	struct dentry *dir = NULL;
+	struct dentry *file = NULL;
 	int i;
 
 	msm_core_data = get_cpu_pwr_stats();
diff --git a/drivers/regulator/cpr3-hmss-regulator.c b/drivers/regulator/cpr3-hmss-regulator.c
index 9a20b6925877..21381d1ad7fa 100644
--- a/drivers/regulator/cpr3-hmss-regulator.c
+++ b/drivers/regulator/cpr3-hmss-regulator.c
@@ -1505,7 +1505,7 @@ static int cpr3_hmss_init_regulator(struct cpr3_regulator *vreg)
 static int cpr3_hmss_init_aging(struct cpr3_controller *ctrl)
 {
 	struct cpr3_msm8996_hmss_fuses *fuse = NULL;
-	struct cpr3_regulator *vreg;
+	struct cpr3_regulator *vreg = NULL;
 	u32 aging_ro_scale;
 	int i, j, rc;
 
@@ -1710,7 +1710,7 @@ static int cpr3_hmss_regulator_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	const struct of_device_id *match;
 	struct cpr3_controller *ctrl;
-	struct cpr3_regulator *vreg;
+	struct cpr3_regulator *vreg = NULL;
 	int i, j, rc;
 
 	if (!dev->of_node) {
diff --git a/drivers/regulator/cpr3-regulator.c b/drivers/regulator/cpr3-regulator.c
index d131a8ea4144..3adbd41ede88 100644
--- a/drivers/regulator/cpr3-regulator.c
+++ b/drivers/regulator/cpr3-regulator.c
@@ -3117,7 +3117,8 @@ static int _cpr3_regulator_update_ctrl_state(struct cpr3_controller *ctrl)
 	struct cpr4_sdelta *sdelta;
 	bool valid = false;
 	bool thread_valid;
-	int i, j, rc, new_volt, vdd_volt, dynamic_floor_volt, last_corner_volt;
+	int i, j, rc;
+	int new_volt, vdd_volt, dynamic_floor_volt, last_corner_volt = 0;
 	u32 reg_last_measurement = 0, sdelta_size;
 	int *sdelta_table, *boost_table;
 
diff --git a/drivers/regulator/cprh-kbss-regulator.c b/drivers/regulator/cprh-kbss-regulator.c
index 2307da9497dc..ecf7885a4bff 100644
--- a/drivers/regulator/cprh-kbss-regulator.c
+++ b/drivers/regulator/cprh-kbss-regulator.c
@@ -1975,7 +1975,7 @@ static int cprh_kbss_init_regulator(struct cpr3_regulator *vreg)
 static int cprh_kbss_init_aging(struct cpr3_controller *ctrl)
 {
 	struct cprh_kbss_fuses *fuse = NULL;
-	struct cpr3_regulator *vreg;
+	struct cpr3_regulator *vreg = NULL;
 	u32 aging_ro_scale;
 	int i, j, rc = 0;
 
diff --git a/drivers/soc/qcom/msm_bus/msm_bus_rules.c b/drivers/soc/qcom/msm_bus/msm_bus_rules.c
index ea29e303bbde..43a892bbd27c 100644
--- a/drivers/soc/qcom/msm_bus/msm_bus_rules.c
+++ b/drivers/soc/qcom/msm_bus/msm_bus_rules.c
@@ -597,7 +597,7 @@ void msm_rule_register(int num_rules, struct bus_rule_type *rule,
 static bool __rule_unregister(int num_rules, struct bus_rule_type *rule,
 					struct notifier_block *nb)
 {
-	int i;
+	int i = 0;
 	struct rule_node_info *node = NULL;
 	struct rule_node_info *node_tmp = NULL;
 	struct rules_def *node_rule;
diff --git a/drivers/soundwire/swr-wcd-ctrl.c b/drivers/soundwire/swr-wcd-ctrl.c
index e72663bd2138..14c13db991a1 100644
--- a/drivers/soundwire/swr-wcd-ctrl.c
+++ b/drivers/soundwire/swr-wcd-ctrl.c
@@ -540,7 +540,7 @@ static int swrm_read(struct swr_master *master, u8 dev_num, u16 reg_addr,
 {
 	struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
 	int ret = 0;
-	int val;
+	int val = 0;
 	u8 *reg_val = (u8 *)buf;
 
 	if (!swrm) {
diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
index 205af6627b80..1de3dddfd0f4 100644
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -146,7 +146,7 @@ int adjust_minadj(short *min_score_adj)
 static int lmk_vmpressure_notifier(struct notifier_block *nb,
 				   unsigned long action, void *data)
 {
-	int other_free, other_file;
+	int other_free = 0, other_file = 0;
 	unsigned long pressure = action;
 	int array_size = ARRAY_SIZE(lowmem_adj);
 
diff --git a/drivers/thermal/msm-tsens.c b/drivers/thermal/msm-tsens.c
index d59b9736c570..5f955af4671a 100644
--- a/drivers/thermal/msm-tsens.c
+++ b/drivers/thermal/msm-tsens.c
@@ -2119,7 +2119,7 @@ static int get_device_tree_data(struct platform_device *pdev,
 {
 	struct device_node *of_node = pdev->dev.of_node;
 	struct resource *res_mem = NULL;
-	u32 *tsens_slope_data, *sensor_id, *client_id;
+	u32 *tsens_slope_data = NULL, *sensor_id, *client_id;
 	u32 *temp1_calib_offset_factor, *temp2_calib_offset_factor;
 	u32 rc = 0, i, tsens_num_sensors = 0;
 	u32 cycle_monitor = 0, wd_bark = 0;
diff --git a/drivers/video/fbdev/msm/mdss_dp_util.c b/drivers/video/fbdev/msm/mdss_dp_util.c
index 0d9cf7b72b4d..e8c3fe9f4957 100644
--- a/drivers/video/fbdev/msm/mdss_dp_util.c
+++ b/drivers/video/fbdev/msm/mdss_dp_util.c
@@ -311,7 +311,7 @@ static void mdss_dp_calc_tu_parameters(u8 link_rate, u8 ln_cnt,
 	bool n_err_neg, nn_err_neg;
 	u8 hblank_margin = 16;
 
-	u8 tu_size, tu_size_desired, tu_size_minus1;
+	u8 tu_size, tu_size_desired = 0, tu_size_minus1;
 	int valid_boundary_link;
 	u64 resulting_valid;
 	u64 total_valid;
diff --git a/drivers/video/fbdev/msm/mdss_dsi.c b/drivers/video/fbdev/msm/mdss_dsi.c
index c7cac996e5c0..23482c8b4246 100644
--- a/drivers/video/fbdev/msm/mdss_dsi.c
+++ b/drivers/video/fbdev/msm/mdss_dsi.c
@@ -2079,7 +2079,7 @@ static int __mdss_dsi_dfps_update_clks(struct mdss_panel_data *pdata,
 {
 	struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
 	struct mdss_dsi_ctrl_pdata *sctrl_pdata = NULL;
-	struct mdss_panel_info *pinfo, *spinfo;
+	struct mdss_panel_info *pinfo, *spinfo = NULL;
 	int rc = 0;
 
 	if (pdata == NULL) {
diff --git a/drivers/video/fbdev/msm/mdss_hdmi_util.c b/drivers/video/fbdev/msm/mdss_hdmi_util.c
index 102c2f994646..827013d06412 100644
--- a/drivers/video/fbdev/msm/mdss_hdmi_util.c
+++ b/drivers/video/fbdev/msm/mdss_hdmi_util.c
@@ -857,7 +857,7 @@ static int hdmi_ddc_read_retry(struct hdmi_tx_ddc_ctrl *ddc_ctrl)
 	u32 reg_val, ndx, time_out_count, wait_time;
 	struct hdmi_tx_ddc_data *ddc_data;
 	int status;
-	int busy_wait_us;
+	int busy_wait_us = 0;
 
 	if (!ddc_ctrl || !ddc_ctrl->io) {
 		pr_err("invalid input\n");
@@ -1335,7 +1335,7 @@ int hdmi_ddc_write(struct hdmi_tx_ddc_ctrl *ddc_ctrl)
 	u32 time_out_count;
 	struct hdmi_tx_ddc_data *ddc_data;
 	u32 wait_time;
-	int busy_wait_us;
+	int busy_wait_us = 0;
 
 	if (!ddc_ctrl || !ddc_ctrl->io) {
 		pr_err("invalid input\n");
diff --git a/drivers/video/fbdev/msm/mdss_mdp_layer.c b/drivers/video/fbdev/msm/mdss_mdp_layer.c
index 472f1e8e8e3b..de7db7e4c9a1 100644
--- a/drivers/video/fbdev/msm/mdss_mdp_layer.c
+++ b/drivers/video/fbdev/msm/mdss_mdp_layer.c
@@ -2410,14 +2410,14 @@ static int __validate_layers(struct msm_fb_data_type *mfd,
 	int layer_count = commit->input_layer_cnt;
 	u32 ds_mode = 0;
 
-	struct mdss_mdp_pipe *pipe, *tmp, *left_blend_pipe;
+	struct mdss_mdp_pipe *pipe = NULL, *tmp, *left_blend_pipe;
 	struct mdss_mdp_pipe *right_plist[MAX_PIPES_PER_LM] = {0};
 	struct mdss_mdp_pipe *left_plist[MAX_PIPES_PER_LM] = {0};
 	struct mdss_overlay_private *mdp5_data = mfd_to_mdp5_data(mfd);
 	struct mdss_data_type *mdata = mfd_to_mdata(mfd);
 
 	struct mdss_mdp_mixer *mixer = NULL;
-	struct mdp_input_layer *layer, *layer_list;
+	struct mdp_input_layer *layer = NULL, *layer_list;
 	struct mdss_mdp_validate_info_t *validate_info_list = NULL;
 	bool is_single_layer = false, force_validate;
 	enum layer_pipe_q pipe_q_type;
diff --git a/drivers/video/fbdev/msm/mdss_mdp_util.c b/drivers/video/fbdev/msm/mdss_mdp_util.c
index 22656175edf8..1ae3d0ba4ec6 100644
--- a/drivers/video/fbdev/msm/mdss_mdp_util.c
+++ b/drivers/video/fbdev/msm/mdss_mdp_util.c
@@ -428,8 +428,8 @@ static int mdss_mdp_get_ubwc_plane_size(struct mdss_mdp_format_params *fmt,
 
 	if (fmt->format == MDP_Y_CBCR_H2V2_UBWC ||
 		fmt->format == MDP_Y_CBCR_H2V2_TP10_UBWC) {
-		uint32_t y_stride_alignment, uv_stride_alignment;
-		uint32_t y_height_alignment, uv_height_alignment;
+		uint32_t y_stride_alignment = 0, uv_stride_alignment = 0;
+		uint32_t y_height_alignment = 0, uv_height_alignment = 0;
 		uint32_t y_tile_width = fmt_ubwc->micro.tile_width;
 		uint32_t y_tile_height = fmt_ubwc->micro.tile_height;
 		uint32_t uv_tile_width = y_tile_width / 2;
diff --git a/drivers/video/fbdev/msm/mdss_rotator.c b/drivers/video/fbdev/msm/mdss_rotator.c
index 399a12e3dcc8..61b0518d3ee6 100644
--- a/drivers/video/fbdev/msm/mdss_rotator.c
+++ b/drivers/video/fbdev/msm/mdss_rotator.c
@@ -687,7 +687,7 @@ static struct mdss_rot_hw_resource *mdss_rotator_hw_alloc(
 	struct mdss_rot_hw_resource *hw;
 	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
 	u32 pipe_ndx, offset = mdss_mdp_get_wb_ctl_support(mdata, true);
-	int ret;
+	int ret = 0;
 
 	hw = devm_kzalloc(&mgr->pdev->dev, sizeof(struct mdss_rot_hw_resource),
 		GFP_KERNEL);
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index cd6009006510..41b40f310c28 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -268,7 +268,7 @@ int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev,
 	struct msi_domain_ops *ops = info->ops;
 	msi_alloc_info_t arg;
 	struct msi_desc *desc;
-	int i, ret, virq;
+	int i, ret, virq = 0;
 
 	ret = ops->msi_check(domain, info, dev);
 	if (ret == 0)
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index 80016b329d94..051544aec37c 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -1250,7 +1250,7 @@ void run_posix_cpu_timers(struct task_struct *tsk)
 void set_process_cpu_timer(struct task_struct *tsk, unsigned int clock_idx,
 			   cputime_t *newval, cputime_t *oldval)
 {
-	unsigned long long now;
+	unsigned long long now = 0;
 
 	WARN_ON_ONCE(clock_idx == CPUCLOCK_SCHED);
 	cpu_timer_sample_group(clock_idx, tsk, &now);
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index b2e934ff2448..1f5d18d80fba 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -991,7 +991,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 	struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr;
 	char *sun_path = sunaddr->sun_path;
 	int err;
-	unsigned int hash;
+	unsigned int hash = 0;
 	struct unix_address *addr;
 	struct hlist_head *list;
 	struct path path = { NULL, NULL };