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authorGreg Kroah-Hartman <gregkh@suse.de>2005-06-20 21:15:16 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2005-10-28 16:47:42 -0700
commit74ad9bd2fcf0fa203655e0d904809b06c4202bf8 (patch)
tree28cf74beab3fcf7f29c4d88bd704f4abfa235601
parent22efcf4adec4262e0f49e6225f6cd070e4a85d20 (diff)
[PATCH] USB: make wHubCharacteristics __le16 to match other usb descriptor fields
Also has the nice benefit of making sparc alignment issues go away. Thanks to David Miller for pointing out the problems here. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/usb/core/hub.c | 22 ++++++++++++---------- drivers/usb/core/hub.h | 2 +- 2 files changed, 13 insertions(+), 11 deletions(-)
-rw-r--r--drivers/usb/core/hub.c22
-rw-r--r--drivers/usb/core/hub.h2
2 files changed, 13 insertions, 11 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 15db5e490aa..e2802bf1809 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -436,9 +436,10 @@ static void hub_power_on(struct usb_hub *hub)
{
int port1;
unsigned pgood_delay = hub->descriptor->bPwrOn2PwrGood * 2;
+ u16 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics);
/* if hub supports power switching, enable power on each port */
- if ((hub->descriptor->wHubCharacteristics & HUB_CHAR_LPSM) < 2) {
+ if ((wHubCharacteristics & HUB_CHAR_LPSM) < 2) {
dev_dbg(hub->intfdev, "enabling power on all ports\n");
for (port1 = 1; port1 <= hub->descriptor->bNbrPorts; port1++)
set_port_feature(hub->hdev, port1,
@@ -525,6 +526,7 @@ static int hub_configure(struct usb_hub *hub,
struct usb_device *hdev = hub->hdev;
struct device *hub_dev = hub->intfdev;
u16 hubstatus, hubchange;
+ u16 wHubCharacteristics;
unsigned int pipe;
int maxp, ret;
char *message;
@@ -570,9 +572,9 @@ static int hub_configure(struct usb_hub *hub,
dev_info (hub_dev, "%d port%s detected\n", hdev->maxchild,
(hdev->maxchild == 1) ? "" : "s");
- le16_to_cpus(&hub->descriptor->wHubCharacteristics);
+ wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics);
- if (hub->descriptor->wHubCharacteristics & HUB_CHAR_COMPOUND) {
+ if (wHubCharacteristics & HUB_CHAR_COMPOUND) {
int i;
char portstr [USB_MAXCHILDREN + 1];
@@ -585,7 +587,7 @@ static int hub_configure(struct usb_hub *hub,
} else
dev_dbg(hub_dev, "standalone hub\n");
- switch (hub->descriptor->wHubCharacteristics & HUB_CHAR_LPSM) {
+ switch (wHubCharacteristics & HUB_CHAR_LPSM) {
case 0x00:
dev_dbg(hub_dev, "ganged power switching\n");
break;
@@ -598,7 +600,7 @@ static int hub_configure(struct usb_hub *hub,
break;
}
- switch (hub->descriptor->wHubCharacteristics & HUB_CHAR_OCPM) {
+ switch (wHubCharacteristics & HUB_CHAR_OCPM) {
case 0x00:
dev_dbg(hub_dev, "global over-current protection\n");
break;
@@ -638,7 +640,7 @@ static int hub_configure(struct usb_hub *hub,
}
/* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
- switch (hub->descriptor->wHubCharacteristics & HUB_CHAR_TTTT) {
+ switch (wHubCharacteristics & HUB_CHAR_TTTT) {
case HUB_TTTT_8_BITS:
if (hdev->descriptor.bDeviceProtocol != 0) {
hub->tt.think_time = 666;
@@ -668,7 +670,7 @@ static int hub_configure(struct usb_hub *hub,
}
/* probe() zeroes hub->indicator[] */
- if (hub->descriptor->wHubCharacteristics & HUB_CHAR_PORTIND) {
+ if (wHubCharacteristics & HUB_CHAR_PORTIND) {
hub->has_indicators = 1;
dev_dbg(hub_dev, "Port indicators are supported\n");
}
@@ -713,7 +715,7 @@ static int hub_configure(struct usb_hub *hub,
(hubstatus & HUB_STATUS_LOCAL_POWER)
? "lost (inactive)" : "good");
- if ((hub->descriptor->wHubCharacteristics & HUB_CHAR_OCPM) == 0)
+ if ((wHubCharacteristics & HUB_CHAR_OCPM) == 0)
dev_dbg(hub_dev, "%sover-current condition exists\n",
(hubstatus & HUB_STATUS_OVERCURRENT) ? "" : "no ");
@@ -2432,6 +2434,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
{
struct usb_device *hdev = hub->hdev;
struct device *hub_dev = hub->intfdev;
+ u16 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics);
int status, i;
dev_dbg (hub_dev,
@@ -2469,8 +2472,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
if (!(portstatus & USB_PORT_STAT_CONNECTION)) {
/* maybe switch power back on (e.g. root hub was reset) */
- if ((hub->descriptor->wHubCharacteristics
- & HUB_CHAR_LPSM) < 2
+ if ((wHubCharacteristics & HUB_CHAR_LPSM) < 2
&& !(portstatus & (1 << USB_PORT_FEAT_POWER)))
set_port_feature(hdev, port1, USB_PORT_FEAT_POWER);
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index e7fa9b5a521..bf23f897802 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -131,7 +131,7 @@ struct usb_hub_descriptor {
__u8 bDescLength;
__u8 bDescriptorType;
__u8 bNbrPorts;
- __u16 wHubCharacteristics;
+ __le16 wHubCharacteristics;
__u8 bPwrOn2PwrGood;
__u8 bHubContrCurrent;
/* add 1 bit for hub status change; round to bytes */