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1e0566fd4a
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAlzrJgUeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG1XAIAJajJpeKc9MVQipi zWiI+WgHDg8gG/HnLKzP2Zp4MUjTCz30t0rnBbdo6AyK6LnPBL53yxg9q64XN7vI p/h2ys+/DvqhIYSPWX6C++HYQT4Cb5ghxJABEIsztd3G4nfB9L2vgq9zKSNFusTD UtfUxufciZPX515TuE4IqWMwS4Ut5daH7V3jjZunhPiayTFv64e1KbpKLLzHR0NR DfFbrPcdp7VyCT/A5AKrqfqeB6O9dm/Fe4CsdsaKuzASCXJ6GUc/A7iZDndv/KA4 f5Xh7SGlQ2TfT1ud/aMfdw3AcMjqB8zgMJenovJ7UuHDfULBWNeAmMh/cTDwY9eY Xgyvfm0= =S8p9 -----END PGP SIGNATURE----- Merge tag 'v5.2-rc2' into patchwork Merge back from upstream into media tree, as there are some patches merged upstream that has pontential of causing conflicts (one actually rised a conflict already). Linux 5.2-rc2 * tag 'v5.2-rc2': (377 commits) Linux 5.2-rc2 random: fix soft lockup when trying to read from an uninitialized blocking pool tracing: Silence GCC 9 array bounds warning ext4: fix dcache lookup of !casefolded directories locking/lock_events: Use this_cpu_add() when necessary KVM: x86: fix return value for reserved EFER tools/kvm_stat: fix fields filter for child events KVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard kvm: selftests: aarch64: compile with warnings on kvm: selftests: aarch64: fix default vm mode kvm: selftests: aarch64: dirty_log_test: fix unaligned memslot size KVM: s390: fix memory slot handling for KVM_SET_USER_MEMORY_REGION KVM: x86/pmu: do not mask the value that is written to fixed PMUs KVM: x86/pmu: mask the result of rdpmc according to the width of the counters x86/kvm/pmu: Set AMD's virt PMU version to 1 KVM: x86: do not spam dmesg with VMCS/VMCB dumps kvm: Check irqchip mode before assign irqfd kvm: svm/avic: fix off-by-one in checking host APIC ID KVM: selftests: do not blindly clobber registers in guest asm KVM: selftests: Remove duplicated TEST_ASSERT in hyperv_cpuid.c ...
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* DVB USB framework
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*
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* Copyright (C) 2004-6 Patrick Boettcher <patrick.boettcher@posteo.de>
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* Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
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*/
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#include "dvb_usb_common.h"
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static int dvb_usb_v2_generic_io(struct dvb_usb_device *d,
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u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
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{
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int ret, actual_length;
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if (!wbuf || !wlen || !d->props->generic_bulk_ctrl_endpoint ||
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!d->props->generic_bulk_ctrl_endpoint_response) {
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dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, -EINVAL);
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return -EINVAL;
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}
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dev_dbg(&d->udev->dev, "%s: >>> %*ph\n", __func__, wlen, wbuf);
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ret = usb_bulk_msg(d->udev, usb_sndbulkpipe(d->udev,
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d->props->generic_bulk_ctrl_endpoint), wbuf, wlen,
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&actual_length, 2000);
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if (ret) {
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dev_err(&d->udev->dev, "%s: usb_bulk_msg() failed=%d\n",
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KBUILD_MODNAME, ret);
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return ret;
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}
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if (actual_length != wlen) {
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dev_err(&d->udev->dev, "%s: usb_bulk_msg() write length=%d, actual=%d\n",
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KBUILD_MODNAME, wlen, actual_length);
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return -EIO;
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}
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/* an answer is expected */
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if (rbuf && rlen) {
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if (d->props->generic_bulk_ctrl_delay)
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usleep_range(d->props->generic_bulk_ctrl_delay,
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d->props->generic_bulk_ctrl_delay
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+ 20000);
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ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev,
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d->props->generic_bulk_ctrl_endpoint_response),
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rbuf, rlen, &actual_length, 2000);
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if (ret)
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dev_err(&d->udev->dev,
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"%s: 2nd usb_bulk_msg() failed=%d\n",
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KBUILD_MODNAME, ret);
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dev_dbg(&d->udev->dev, "%s: <<< %*ph\n", __func__,
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actual_length, rbuf);
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}
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return ret;
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}
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int dvb_usbv2_generic_rw(struct dvb_usb_device *d,
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u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
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{
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int ret;
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mutex_lock(&d->usb_mutex);
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ret = dvb_usb_v2_generic_io(d, wbuf, wlen, rbuf, rlen);
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mutex_unlock(&d->usb_mutex);
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return ret;
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}
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EXPORT_SYMBOL(dvb_usbv2_generic_rw);
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int dvb_usbv2_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len)
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{
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int ret;
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mutex_lock(&d->usb_mutex);
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ret = dvb_usb_v2_generic_io(d, buf, len, NULL, 0);
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mutex_unlock(&d->usb_mutex);
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return ret;
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}
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EXPORT_SYMBOL(dvb_usbv2_generic_write);
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int dvb_usbv2_generic_rw_locked(struct dvb_usb_device *d,
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u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
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{
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return dvb_usb_v2_generic_io(d, wbuf, wlen, rbuf, rlen);
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}
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EXPORT_SYMBOL(dvb_usbv2_generic_rw_locked);
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int dvb_usbv2_generic_write_locked(struct dvb_usb_device *d, u8 *buf, u16 len)
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{
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return dvb_usb_v2_generic_io(d, buf, len, NULL, 0);
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}
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EXPORT_SYMBOL(dvb_usbv2_generic_write_locked);
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