From 07de5bdb7bad607e29dc17c345717403a76a334c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Krzysztof=20Kosi=C5=84ski?= Date: Thu, 19 Mar 2009 23:22:31 +0100 Subject: tc1100-wmi: Fix state reporting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The tc1100-wmi driver should print the current states of wireless LAN and jogdial brightness control when "cat /sys/devices/platform/tc1100-wmi/wireless" and "cat /sys/devices/platform/tc1100-wmi/jogdial" are executed, respectively. What actually happens is that both of those commands print 0 regardless of the hardware state. The cause is that wmi_query_block returns an ACPI_TYPE_INTEGER rather than ACPI_TYPE_BUFFER as the driver assumes. Additionally, the driver intends to return a jogdial state that is inverted with respect to the commands required to set it (e.g. it intends to return 1 after the jogdial file was written with 0). This patch fixes both of those issues - the commands to query the state now work, and should return the same state that was written. http://bugzilla.kernel.org/show_bug.cgi?id=12286 Signed-off-by: Krzysztof Kosiński Acked-by: Carlos Corbacho Signed-off-by: Len Brown --- drivers/platform/x86/tc1100-wmi.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c index b4a4aa9..4416600 100644 --- a/drivers/platform/x86/tc1100-wmi.c +++ b/drivers/platform/x86/tc1100-wmi.c @@ -94,9 +94,8 @@ static int get_state(u32 *out, u8 instance) return -ENODEV; obj = (union acpi_object *) result.pointer; - if (obj && obj->type == ACPI_TYPE_BUFFER && - obj->buffer.length == sizeof(u32)) { - tmp = *((u32 *) obj->buffer.pointer); + if (obj && obj->type == ACPI_TYPE_INTEGER) { + tmp = obj->integer.value; } else { tmp = 0; } @@ -109,7 +108,7 @@ static int get_state(u32 *out, u8 instance) *out = (tmp == 3) ? 1 : 0; return 0; case TC1100_INSTANCE_JOGDIAL: - *out = (tmp == 1) ? 1 : 0; + *out = (tmp == 1) ? 0 : 1; return 0; default: return -ENODEV; -- cgit v1.1 From c542aadeb4700bc316834d862d52ba3d2664f13a Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Wed, 14 Jan 2009 13:59:50 +0800 Subject: panasonic-laptop: Fix autoloading This patch adds MODULE_DEVICE_TABLE() to panasonic-laptop.c in order to ensure automatic loading of the module on systems with the respective "MAT*" ACPI devices. Signed-off-by: Martin Lucina Signed-off-by: Harald Welte Signed-off-by: Len Brown --- drivers/platform/x86/panasonic-laptop.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index c47a44d..ecaca41 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -184,6 +184,7 @@ static const struct acpi_device_id pcc_device_ids[] = { { "MAT0019", 0}, { "", 0}, }; +MODULE_DEVICE_TABLE(acpi, pcc_device_ids); static struct acpi_driver acpi_pcc_driver = { .name = ACPI_PCC_DRIVER_NAME, -- cgit v1.1 From ba256b41bd58f0821c9c0e203982fb260f09bdeb Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Wed, 14 Jan 2009 14:01:17 +0800 Subject: panasonic-laptop: use snprintf with PAGE_SIZE in sysfs attributes Instead of just sprintf() into the page-sized buffer provided by the sysfs/device_attribute API, we use snprintf with PAGE_SIZE as an additional safeguard. Signed-off-by: Martin Lucina Signed-off-by: Harald Welte Signed-off-by: Len Brown --- drivers/platform/x86/panasonic-laptop.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index ecaca41..a5ce4bc 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -367,7 +367,7 @@ static ssize_t show_numbatt(struct device *dev, struct device_attribute *attr, if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) return -EIO; - return sprintf(buf, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); + return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); } static ssize_t show_lcdtype(struct device *dev, struct device_attribute *attr, @@ -379,7 +379,7 @@ static ssize_t show_lcdtype(struct device *dev, struct device_attribute *attr, if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) return -EIO; - return sprintf(buf, "%u\n", pcc->sinf[SINF_LCD_TYPE]); + return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]); } static ssize_t show_mute(struct device *dev, struct device_attribute *attr, @@ -391,7 +391,7 @@ static ssize_t show_mute(struct device *dev, struct device_attribute *attr, if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) return -EIO; - return sprintf(buf, "%u\n", pcc->sinf[SINF_MUTE]); + return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]); } static ssize_t show_sticky(struct device *dev, struct device_attribute *attr, @@ -403,7 +403,7 @@ static ssize_t show_sticky(struct device *dev, struct device_attribute *attr, if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) return -EIO; - return sprintf(buf, "%u\n", pcc->sinf[SINF_STICKY_KEY]); + return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_STICKY_KEY]); } static ssize_t set_sticky(struct device *dev, struct device_attribute *attr, -- cgit v1.1