From f57661394a8b00029e37a5567a869e92bd13f3b8 Mon Sep 17 00:00:00 2001 From: Puneet Saxena Date: Tue, 3 Apr 2012 14:56:06 +0530 Subject: USB: Align buffers at cacheline This avoids cache-alignment warnings shown in console when a usb command is entered. Whenever X bytes of unaligned buffer is invalidated, arm core invalidates X + Y bytes as per the cache line size and throws these warnings. Signed-off-by: Puneet Saxena Signed-off-by: Marek Vasut --- common/usb_hub.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) (limited to 'common/usb_hub.c') diff --git a/common/usb_hub.c b/common/usb_hub.c index e0edaad..f35ad95 100644 --- a/common/usb_hub.c +++ b/common/usb_hub.c @@ -153,7 +153,7 @@ int hub_port_reset(struct usb_device *dev, int port, unsigned short *portstat) { int tries; - struct usb_port_status portsts; + ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); unsigned short portstatus, portchange; USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port); @@ -162,13 +162,13 @@ int hub_port_reset(struct usb_device *dev, int port, usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); mdelay(200); - if (usb_get_port_status(dev, port + 1, &portsts) < 0) { + if (usb_get_port_status(dev, port + 1, portsts) < 0) { USB_HUB_PRINTF("get_port_status failed status %lX\n", dev->status); return -1; } - portstatus = le16_to_cpu(portsts.wPortStatus); - portchange = le16_to_cpu(portsts.wPortChange); + portstatus = le16_to_cpu(portsts->wPortStatus); + portchange = le16_to_cpu(portsts->wPortChange); USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus, portchange, @@ -206,19 +206,19 @@ int hub_port_reset(struct usb_device *dev, int port, void usb_hub_port_connect_change(struct usb_device *dev, int port) { struct usb_device *usb; - struct usb_port_status portsts; + ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); unsigned short portstatus; /* Check status */ - if (usb_get_port_status(dev, port + 1, &portsts) < 0) { + if (usb_get_port_status(dev, port + 1, portsts) < 0) { USB_HUB_PRINTF("get_port_status failed\n"); return; } - portstatus = le16_to_cpu(portsts.wPortStatus); + portstatus = le16_to_cpu(portsts->wPortStatus); USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus, - le16_to_cpu(portsts.wPortChange), + le16_to_cpu(portsts->wPortChange), portspeed(portstatus)); /* Clear the connection change status */ @@ -267,7 +267,8 @@ void usb_hub_port_connect_change(struct usb_device *dev, int port) static int usb_hub_configure(struct usb_device *dev) { int i; - unsigned char buffer[USB_BUFSIZ], *bitmap; + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ); + unsigned char *bitmap; struct usb_hub_descriptor *descriptor; struct usb_hub_device *hub; #ifdef USB_HUB_DEBUG @@ -389,16 +390,16 @@ static int usb_hub_configure(struct usb_device *dev) usb_hub_power_on(hub); for (i = 0; i < dev->maxchild; i++) { - struct usb_port_status portsts; + ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); unsigned short portstatus, portchange; - if (usb_get_port_status(dev, i + 1, &portsts) < 0) { + if (usb_get_port_status(dev, i + 1, portsts) < 0) { USB_HUB_PRINTF("get_port_status failed\n"); continue; } - portstatus = le16_to_cpu(portsts.wPortStatus); - portchange = le16_to_cpu(portsts.wPortChange); + portstatus = le16_to_cpu(portsts->wPortStatus); + portchange = le16_to_cpu(portsts->wPortChange); USB_HUB_PRINTF("Port %d Status %X Change %X\n", i + 1, portstatus, portchange); -- cgit v1.1