From 2bfc3c6e9516ece6856ec7904319650a5d4d9871 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Tue, 14 Mar 2006 00:12:24 -0500 Subject: [PATCH] Input: i8042 - fix logic around pnp_register_driver() Do not assume that pnp_register_driver() returns the number of devices claimed. Signed-off-by: Bjorn Helgaas Signed-off-by: Dmitry Torokhov --- drivers/input/serio/i8042-x86ia64io.h | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index a4c6f35227..f606e96bc2 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -192,7 +192,9 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = { #include static int i8042_pnp_kbd_registered; +static unsigned int i8042_pnp_kbd_devices; static int i8042_pnp_aux_registered; +static unsigned int i8042_pnp_aux_devices; static int i8042_pnp_command_reg; static int i8042_pnp_data_reg; @@ -219,6 +221,7 @@ static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id * strncat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name)); } + i8042_pnp_kbd_devices++; return 0; } @@ -239,6 +242,7 @@ static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id * strncat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name)); } + i8042_pnp_aux_devices++; return 0; } @@ -287,21 +291,23 @@ static void i8042_pnp_exit(void) static int __init i8042_pnp_init(void) { - int result_kbd = 0, result_aux = 0; char kbd_irq_str[4] = { 0 }, aux_irq_str[4] = { 0 }; + int err; if (i8042_nopnp) { printk(KERN_INFO "i8042: PNP detection disabled\n"); return 0; } - if ((result_kbd = pnp_register_driver(&i8042_pnp_kbd_driver)) >= 0) + err = pnp_register_driver(&i8042_pnp_kbd_driver); + if (!err) i8042_pnp_kbd_registered = 1; - if ((result_aux = pnp_register_driver(&i8042_pnp_aux_driver)) >= 0) + err = pnp_register_driver(&i8042_pnp_aux_driver); + if (!err) i8042_pnp_aux_registered = 1; - if (result_kbd <= 0 && result_aux <= 0) { + if (!i8042_pnp_kbd_devices && !i8042_pnp_aux_devices) { i8042_pnp_exit(); #if defined(__ia64__) return -ENODEV; @@ -311,24 +317,24 @@ static int __init i8042_pnp_init(void) #endif } - if (result_kbd > 0) + if (i8042_pnp_kbd_devices) snprintf(kbd_irq_str, sizeof(kbd_irq_str), "%d", i8042_pnp_kbd_irq); - if (result_aux > 0) + if (i8042_pnp_aux_devices) snprintf(aux_irq_str, sizeof(aux_irq_str), "%d", i8042_pnp_aux_irq); printk(KERN_INFO "PNP: PS/2 Controller [%s%s%s] at %#x,%#x irq %s%s%s\n", - i8042_pnp_kbd_name, (result_kbd > 0 && result_aux > 0) ? "," : "", + i8042_pnp_kbd_name, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "", i8042_pnp_aux_name, i8042_pnp_data_reg, i8042_pnp_command_reg, - kbd_irq_str, (result_kbd > 0 && result_aux > 0) ? "," : "", + kbd_irq_str, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "", aux_irq_str); #if defined(__ia64__) - if (result_kbd <= 0) + if (!i8042_pnp_kbd_devices) i8042_nokbd = 1; - if (result_aux <= 0) + if (!i8042_pnp_aux_devices) i8042_noaux = 1; #endif -- 2.39.5