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Commit e294531d authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Greg Kroah-Hartman
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USB: r8a66597-hcd: fixes some problem 

This patch incorporates some updates. Updates include:

 - Fix the problem that control transfer might fail
 - Change from GFP_KERNEL to GFP_ATOMIC
 - Clean up some coding style issue
Signed-off-by: default avatarYoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 809a58b8
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Inline Side-by-side
Showing with 96 additions and 101 deletions
drivers/usb/host/r8a66597-hcd.c
View file @ e294531d
......@@ -35,10 +35,8 @@
#include <linux/interrupt.h>
#include <linux/usb.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <linux/io.h>
#include <linux/irq.h>
#include "../core/hcd.h"
#include "r8a66597.h"
......@@ -54,16 +52,21 @@ static const char hcd_name[] = "r8a66597_hcd";
/* module parameters */
static unsigned short clock = XTAL12;
module_param(clock, ushort, 0644);
MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0(default=0)");
MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
"(default=0)");
static unsigned short vif = LDRV;
module_param(vif, ushort, 0644);
MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
static unsigned short endian = 0;
static unsigned short endian;
module_param(endian, ushort, 0644);
MODULE_PARM_DESC(endian, "data endian: big=256, little=0(default=0)");
MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
static unsigned short irq_sense = INTL;
module_param(irq_sense, ushort, 0644);
MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0(default=32)");
MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
"(default=32)");
static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
static int r8a66597_get_frame(struct usb_hcd *hcd);
......@@ -308,7 +311,7 @@ static int make_r8a66597_device(struct r8a66597 *r8a66597,
struct r8a66597_device *dev;
int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
dev = kzalloc(sizeof(struct r8a66597_device), GFP_KERNEL);
dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
if (dev == NULL)
return -ENOMEM;
......@@ -611,7 +614,7 @@ static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
memset(array, 0, sizeof(array));
switch(ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
case USB_ENDPOINT_XFER_BULK:
if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
array[i++] = 4;
......@@ -654,7 +657,7 @@ static u16 get_r8a66597_type(__u8 type)
{
u16 r8a66597_type;
switch(type) {
switch (type) {
case USB_ENDPOINT_XFER_BULK:
r8a66597_type = R8A66597_BULK;
break;
......@@ -874,7 +877,7 @@ static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
{
r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
| (1 << USB_PORT_FEAT_C_CONNECTION);
r8a66597_write(r8a66597, (u16)~DTCH, get_intsts_reg(port));
r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
}
......@@ -917,7 +920,7 @@ static void prepare_setup_packet(struct r8a66597 *r8a66597,
r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
DCPMAXP);
r8a66597_write(r8a66597, (u16)~(SIGN | SACK), INTSTS1);
r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
for (i = 0; i < 4; i++) {
r8a66597_write(r8a66597, p[i], setup_addr);
......@@ -948,8 +951,7 @@ static void prepare_packet_read(struct r8a66597 *r8a66597,
pipe_irq_disable(r8a66597, td->pipenum);
pipe_setting(r8a66597, td);
pipe_stop(r8a66597, td->pipe);
r8a66597_write(r8a66597, (u16)~(1 << td->pipenum),
BRDYSTS);
r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
if (td->pipe->pipetre) {
r8a66597_write(r8a66597, TRCLR,
......@@ -991,7 +993,7 @@ static void prepare_packet_write(struct r8a66597 *r8a66597,
if (td->pipe->pipetre)
r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
}
r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), BRDYSTS);
r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
fifo_change_from_pipe(r8a66597, td->pipe);
tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
......@@ -1009,21 +1011,21 @@ static void prepare_status_packet(struct r8a66597 *r8a66597,
struct urb *urb = td->urb;
r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
pipe_stop(r8a66597, td->pipe);
if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
r8a66597_write(r8a66597, BVAL | BCLR, CFIFOCTR);
r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
r8a66597_write(r8a66597, BCLR, CFIFOCTR);
r8a66597_write(r8a66597, BVAL, CFIFOCTR);
enable_irq_empty(r8a66597, 0);
} else {
r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
r8a66597_write(r8a66597, BCLR, CFIFOCTR);
r8a66597_write(r8a66597, (u16)~BRDY0, BRDYSTS);
r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
enable_irq_ready(r8a66597, 0);
}
enable_irq_nrdy(r8a66597, 0);
......@@ -1269,7 +1271,7 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
/* write fifo */
if (pipenum > 0)
r8a66597_write(r8a66597, (u16)~(1 << pipenum), BEMPSTS);
r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
if (urb->transfer_buffer) {
r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
......@@ -1362,7 +1364,7 @@ static void irq_pipe_ready(struct r8a66597 *r8a66597)
mask = r8a66597_read(r8a66597, BRDYSTS)
& r8a66597_read(r8a66597, BRDYENB);
r8a66597_write(r8a66597, (u16)~mask, BRDYSTS);
r8a66597_write(r8a66597, ~mask, BRDYSTS);
if (mask & BRDY0) {
td = r8a66597_get_td(r8a66597, 0);
if (td && td->type == USB_PID_IN)
......@@ -1397,7 +1399,7 @@ static void irq_pipe_empty(struct r8a66597 *r8a66597)
mask = r8a66597_read(r8a66597, BEMPSTS)
& r8a66597_read(r8a66597, BEMPENB);
r8a66597_write(r8a66597, (u16)~mask, BEMPSTS);
r8a66597_write(r8a66597, ~mask, BEMPSTS);
if (mask & BEMP0) {
cfifo_change(r8a66597, 0);
td = r8a66597_get_td(r8a66597, 0);
......@@ -1434,7 +1436,7 @@ static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
mask = r8a66597_read(r8a66597, NRDYSTS)
& r8a66597_read(r8a66597, NRDYENB);
r8a66597_write(r8a66597, (u16)~mask, NRDYSTS);
r8a66597_write(r8a66597, ~mask, NRDYSTS);
if (mask & NRDY0) {
cfifo_change(r8a66597, 0);
set_urb_error(r8a66597, 0);
......@@ -1488,14 +1490,14 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
if (mask2) {
if (mask2 & ATTCH) {
r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS2);
r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
/* start usb bus sampling */
start_root_hub_sampling(r8a66597, 1);
}
if (mask2 & DTCH) {
r8a66597_write(r8a66597, (u16)~DTCH, INTSTS2);
r8a66597_write(r8a66597, ~DTCH, INTSTS2);
r8a66597_bclr(r8a66597, DTCHE, INTENB2);
r8a66597_usb_disconnect(r8a66597, 1);
}
......@@ -1503,24 +1505,24 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
if (mask1) {
if (mask1 & ATTCH) {
r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS1);
r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
/* start usb bus sampling */
start_root_hub_sampling(r8a66597, 0);
}
if (mask1 & DTCH) {
r8a66597_write(r8a66597, (u16)~DTCH, INTSTS1);
r8a66597_write(r8a66597, ~DTCH, INTSTS1);
r8a66597_bclr(r8a66597, DTCHE, INTENB1);
r8a66597_usb_disconnect(r8a66597, 0);
}
if (mask1 & SIGN) {
r8a66597_write(r8a66597, (u16)~SIGN, INTSTS1);
r8a66597_write(r8a66597, ~SIGN, INTSTS1);
set_urb_error(r8a66597, 0);
check_next_phase(r8a66597);
}
if (mask1 & SACK) {
r8a66597_write(r8a66597, (u16)~SACK, INTSTS1);
r8a66597_write(r8a66597, ~SACK, INTSTS1);
check_next_phase(r8a66597);
}
}
......@@ -1663,13 +1665,9 @@ static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
static int r8a66597_start(struct usb_hcd *hcd)
{
struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
int ret;
hcd->state = HC_STATE_RUNNING;
if ((ret = enable_controller(r8a66597)) < 0)
return ret;
return 0;
return enable_controller(r8a66597);
}
static void r8a66597_stop(struct usb_hcd *hcd)
......@@ -1696,13 +1694,12 @@ static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
struct urb *urb,
struct usb_host_endpoint *hep,
gfp_t mem_flags)
struct usb_host_endpoint *hep)
{
struct r8a66597_td *td;
u16 pipenum;
td = kzalloc(sizeof(struct r8a66597_td), mem_flags);
td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
if (td == NULL)
return NULL;
......@@ -1741,7 +1738,8 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
}
if (!hep->hcpriv) {
hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), mem_flags);
hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
GFP_ATOMIC);
if (!hep->hcpriv) {
ret = -ENOMEM;
goto error;
......@@ -1755,7 +1753,7 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
init_pipe_config(r8a66597, urb);
set_address_zero(r8a66597, urb);
td = r8a66597_make_td(r8a66597, urb, hep, mem_flags);
td = r8a66597_make_td(r8a66597, urb, hep);
if (td == NULL) {
ret = -ENOMEM;
goto error;
......
drivers/usb/host/r8a66597.h
View file @ e294531d
......@@ -315,9 +315,6 @@
/* Micro Frame Number Register */
#define UFRNM 0x0007 /* b2-0: Micro frame number */
/* USB Address / Low Power Status Recovery Register */
//#define USBADDR 0x007F /* b6-0: USB address */
/* Default Control Pipe Maxpacket Size Register */
/* Pipe Maxpacket Size Register */
#define DEVSEL 0xF000 /* b15-14: Device address select */
......
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