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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-03-25 01:02:45 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-03-25 01:02:45 +0100 |
commit | 5cf955e05c9a1e9a895075af8df89eecc17b6ac8 (patch) | |
tree | 90b8848d64829a0396024e2e660a68fbbe1e9bd1 /drivers | |
parent | Merge tag 'spi-v4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/bro... (diff) | |
parent | mfd: kempld-core: Fix callback return value check (diff) | |
download | linux-5cf955e05c9a1e9a895075af8df89eecc17b6ac8.tar.xz linux-5cf955e05c9a1e9a895075af8df89eecc17b6ac8.zip |
Merge tag 'mfd-fixes-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD fixes from Lee Jones:
- Use DMA'able addresses for DMA; rtsx_usb
- Use return value in the correct way; kempld-core
* tag 'mfd-fixes-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: kempld-core: Fix callback return value check
mfd: rtsx_usb: Prevent DMA from stack
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/mfd/kempld-core.c | 2 | ||||
-rw-r--r-- | drivers/mfd/rtsx_usb.c | 30 |
2 files changed, 25 insertions, 7 deletions
diff --git a/drivers/mfd/kempld-core.c b/drivers/mfd/kempld-core.c index f38ec424872e..5615522f8d62 100644 --- a/drivers/mfd/kempld-core.c +++ b/drivers/mfd/kempld-core.c @@ -739,7 +739,7 @@ static int __init kempld_init(void) for (id = kempld_dmi_table; id->matches[0].slot != DMI_NONE; id++) if (strstr(id->ident, force_device_id)) - if (id->callback && id->callback(id)) + if (id->callback && !id->callback(id)) break; if (id->matches[0].slot == DMI_NONE) return -ENODEV; diff --git a/drivers/mfd/rtsx_usb.c b/drivers/mfd/rtsx_usb.c index ede50244f265..dbd907d7170e 100644 --- a/drivers/mfd/rtsx_usb.c +++ b/drivers/mfd/rtsx_usb.c @@ -196,18 +196,27 @@ EXPORT_SYMBOL_GPL(rtsx_usb_ep0_write_register); int rtsx_usb_ep0_read_register(struct rtsx_ucr *ucr, u16 addr, u8 *data) { u16 value; + u8 *buf; + int ret; if (!data) return -EINVAL; - *data = 0; + + buf = kzalloc(sizeof(u8), GFP_KERNEL); + if (!buf) + return -ENOMEM; addr |= EP0_READ_REG_CMD << EP0_OP_SHIFT; value = swab16(addr); - return usb_control_msg(ucr->pusb_dev, + ret = usb_control_msg(ucr->pusb_dev, usb_rcvctrlpipe(ucr->pusb_dev, 0), RTSX_USB_REQ_REG_OP, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - value, 0, data, 1, 100); + value, 0, buf, 1, 100); + *data = *buf; + + kfree(buf); + return ret; } EXPORT_SYMBOL_GPL(rtsx_usb_ep0_read_register); @@ -288,18 +297,27 @@ static int rtsx_usb_get_status_with_bulk(struct rtsx_ucr *ucr, u16 *status) int rtsx_usb_get_card_status(struct rtsx_ucr *ucr, u16 *status) { int ret; + u16 *buf; if (!status) return -EINVAL; - if (polling_pipe == 0) + if (polling_pipe == 0) { + buf = kzalloc(sizeof(u16), GFP_KERNEL); + if (!buf) + return -ENOMEM; + ret = usb_control_msg(ucr->pusb_dev, usb_rcvctrlpipe(ucr->pusb_dev, 0), RTSX_USB_REQ_POLL, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0, 0, status, 2, 100); - else + 0, 0, buf, 2, 100); + *status = *buf; + + kfree(buf); + } else { ret = rtsx_usb_get_status_with_bulk(ucr, status); + } /* usb_control_msg may return positive when success */ if (ret < 0) |