Re: [PATCH] viafb: replace strict_strtoul to kstrto* and check return
From: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Date: 2011-08-08 10:40:38
Hello Wang, On 08/08/2011 02:18 AM, stufever@gmail.com wrote:
From: Wang Shaoyan<redacted> This commit replace the function strict_strtoul(becasue commit 33ee3b2e), and check the return value to avoid such warning: drivers/video/via/viafbdev.c:1992: warning: ignoring return value of 'kstrtoul', declared with attribute warn_unused_result Signed-off-by: Wang Shaoyan<redacted>
Thank you, this looks good, I will apply it. Best regards, Florian Tobias Schandinat
quoted hunk ↗ jump to hunk
--- drivers/video/via/viafbdev.c | 126 ++++++++++++++++++++++------------------- 1 files changed, 68 insertions(+), 58 deletions(-)diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index 53aa443..ddf4a9a 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c@@ -1158,7 +1158,8 @@ static ssize_t viafb_dvp0_proc_write(struct file *file, for (i = 0; i< 3; i++) { value = strsep(&pbuf, " "); if (value != NULL) { - strict_strtoul(value, 0, (unsigned long *)®_val); + if (kstrtou8(value, 0,®_val)< 0) + return -EINVAL; DEBUG_MSG(KERN_INFO "DVP0:reg_val[%l]=:%x\n", i, reg_val); switch (i) {@@ -1228,7 +1229,8 @@ static ssize_t viafb_dvp1_proc_write(struct file *file, for (i = 0; i< 3; i++) { value = strsep(&pbuf, " "); if (value != NULL) { - strict_strtoul(value, 0, (unsigned long *)®_val); + if (kstrtou8(value, 0,®_val)< 0) + return -EINVAL; switch (i) { case 0: viafb_write_reg_mask(CR9B, VIACR,@@ -1286,7 +1288,8 @@ static ssize_t viafb_dfph_proc_write(struct file *file, if (copy_from_user(&buf[0], buffer, length)) return -EFAULT; buf[length - 1] = '\0'; /*Ensure end string */ - strict_strtoul(&buf[0], 0, (unsigned long *)®_val); + if (kstrtou8(buf, 0,®_val)< 0) + return -EINVAL; viafb_write_reg_mask(CR97, VIACR, reg_val, 0x0f); return count; }@@ -1325,7 +1328,8 @@ static ssize_t viafb_dfpl_proc_write(struct file *file, if (copy_from_user(&buf[0], buffer, length)) return -EFAULT; buf[length - 1] = '\0'; /*Ensure end string */ - strict_strtoul(&buf[0], 0, (unsigned long *)®_val); + if (kstrtou8(buf, 0,®_val)< 0) + return -EINVAL; viafb_write_reg_mask(CR99, VIACR, reg_val, 0x0f); return count; }@@ -1394,8 +1398,8 @@ static ssize_t viafb_vt1636_proc_write(struct file *file, for (i = 0; i< 2; i++) { value = strsep(&pbuf, " "); if (value != NULL) { - strict_strtoul(value, 0, - (unsigned long *)®_val.Data); + if (kstrtou8(value, 0,®_val.Data)< 0) + return -EINVAL; switch (i) { case 0: reg_val.Index = 0x08;@@ -1431,8 +1435,8 @@ static ssize_t viafb_vt1636_proc_write(struct file *file, for (i = 0; i< 2; i++) { value = strsep(&pbuf, " "); if (value != NULL) { - strict_strtoul(value, 0, - (unsigned long *)®_val.Data); + if (kstrtou8(value, 0,®_val.Data)< 0) + return -EINVAL; switch (i) { case 0: reg_val.Index = 0x08;@@ -1950,61 +1954,67 @@ static int __init viafb_setup(void) if (!*this_opt) continue; - if (!strncmp(this_opt, "viafb_mode1=", 12)) + if (!strncmp(this_opt, "viafb_mode1=", 12)) { viafb_mode1 = kstrdup(this_opt + 12, GFP_KERNEL); - else if (!strncmp(this_opt, "viafb_mode=", 11)) + } else if (!strncmp(this_opt, "viafb_mode=", 11)) { viafb_mode = kstrdup(this_opt + 11, GFP_KERNEL); - else if (!strncmp(this_opt, "viafb_bpp1=", 11)) - strict_strtoul(this_opt + 11, 0, - (unsigned long *)&viafb_bpp1); - else if (!strncmp(this_opt, "viafb_bpp=", 10)) - strict_strtoul(this_opt + 10, 0, - (unsigned long *)&viafb_bpp); - else if (!strncmp(this_opt, "viafb_refresh1=", 15)) - strict_strtoul(this_opt + 15, 0, - (unsigned long *)&viafb_refresh1); - else if (!strncmp(this_opt, "viafb_refresh=", 14)) - strict_strtoul(this_opt + 14, 0, - (unsigned long *)&viafb_refresh); - else if (!strncmp(this_opt, "viafb_lcd_dsp_method=", 21)) - strict_strtoul(this_opt + 21, 0, - (unsigned long *)&viafb_lcd_dsp_method); - else if (!strncmp(this_opt, "viafb_lcd_panel_id=", 19)) - strict_strtoul(this_opt + 19, 0, - (unsigned long *)&viafb_lcd_panel_id); - else if (!strncmp(this_opt, "viafb_accel=", 12)) - strict_strtoul(this_opt + 12, 0, - (unsigned long *)&viafb_accel); - else if (!strncmp(this_opt, "viafb_SAMM_ON=", 14)) - strict_strtoul(this_opt + 14, 0, - (unsigned long *)&viafb_SAMM_ON); - else if (!strncmp(this_opt, "viafb_active_dev=", 17)) + } else if (!strncmp(this_opt, "viafb_bpp1=", 11)) { + if (kstrtouint(this_opt + 11, 0,&viafb_bpp1)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_bpp=", 10)) { + if (kstrtouint(this_opt + 10, 0,&viafb_bpp)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_refresh1=", 15)) { + if (kstrtoint(this_opt + 15, 0,&viafb_refresh1)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_refresh=", 14)) { + if (kstrtoint(this_opt + 14, 0,&viafb_refresh)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_lcd_dsp_method=", 21)) { + if (kstrtoint(this_opt + 21, 0, + &viafb_lcd_dsp_method)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_lcd_panel_id=", 19)) { + if (kstrtoint(this_opt + 19, 0, + &viafb_lcd_panel_id)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_accel=", 12)) { + if (kstrtoint(this_opt + 12, 0,&viafb_accel)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_SAMM_ON=", 14)) { + if (kstrtoint(this_opt + 14, 0,&viafb_SAMM_ON)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_active_dev=", 17)) { viafb_active_dev = kstrdup(this_opt + 17, GFP_KERNEL); - else if (!strncmp(this_opt, - "viafb_display_hardware_layout=", 30)) - strict_strtoul(this_opt + 30, 0, - (unsigned long *)&viafb_display_hardware_layout); - else if (!strncmp(this_opt, "viafb_second_size=", 18)) - strict_strtoul(this_opt + 18, 0, - (unsigned long *)&viafb_second_size); - else if (!strncmp(this_opt, - "viafb_platform_epia_dvi=", 24)) - strict_strtoul(this_opt + 24, 0, - (unsigned long *)&viafb_platform_epia_dvi); - else if (!strncmp(this_opt, - "viafb_device_lcd_dualedge=", 26)) - strict_strtoul(this_opt + 26, 0, - (unsigned long *)&viafb_device_lcd_dualedge); - else if (!strncmp(this_opt, "viafb_bus_width=", 16)) - strict_strtoul(this_opt + 16, 0, - (unsigned long *)&viafb_bus_width); - else if (!strncmp(this_opt, "viafb_lcd_mode=", 15)) - strict_strtoul(this_opt + 15, 0, - (unsigned long *)&viafb_lcd_mode); - else if (!strncmp(this_opt, "viafb_lcd_port=", 15)) + } else if (!strncmp(this_opt, + "viafb_display_hardware_layout=", 30)) { + if (kstrtoint(this_opt + 30, 0, + &viafb_display_hardware_layout)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_second_size=", 18)) { + if (kstrtoint(this_opt + 18, 0,&viafb_second_size)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, + "viafb_platform_epia_dvi=", 24)) { + if (kstrtoint(this_opt + 24, 0, + &viafb_platform_epia_dvi)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, + "viafb_device_lcd_dualedge=", 26)) { + if (kstrtoint(this_opt + 26, 0, + &viafb_device_lcd_dualedge)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_bus_width=", 16)) { + if (kstrtoint(this_opt + 16, 0,&viafb_bus_width)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_lcd_mode=", 15)) { + if (kstrtoint(this_opt + 15, 0,&viafb_lcd_mode)< 0) + return -EINVAL; + } else if (!strncmp(this_opt, "viafb_lcd_port=", 15)) { viafb_lcd_port = kstrdup(this_opt + 15, GFP_KERNEL); - else if (!strncmp(this_opt, "viafb_dvi_port=", 15)) + } else if (!strncmp(this_opt, "viafb_dvi_port=", 15)) { viafb_dvi_port = kstrdup(this_opt + 15, GFP_KERNEL); + } } return 0; }