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Bitterblue Smith b06439c668 wifi: rtlwifi: Speed up firmware loading for USB 
Currently it takes almost 6 seconds to upload the firmware for RTL8192CU
(and 11 seconds for RTL8192DU). That's because the firmware is uploaded
one byte at a time.

Also, after plugging the device, the firmware gets uploaded three times
before a connection to the AP is established.

Maybe this is fine for most users, but when testing changes to the
driver it's really annoying to wait so long.

Speed up the firmware upload by writing chunks of 64 bytes at a time.
This way it takes about 110 ms for RTL8192CU (and about 210 ms for
RTL8192DU).

PCI devices could upload it in chunks of 4 bytes, but I don't have any
to test and commit 89d32c9071 ("rtlwifi: Download firmware as bytes
rather than as dwords") decided otherwise anyway.

Allocate memory for the firmware image with kmalloc instead of vzalloc
because this memory is passed directly to usb_control_msg(), which
can't take memory allocated by vmalloc.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/d9bd4949-6e92-4f35-8b60-3b45f9ad74ab@gmail.com
History 2024-01-19 19:31:21 +02:00
arch bpf-next-for-netdev 2024-01-05 19:15:32 -08:00
block block-6.7-2023-12-29 2023-12-29 11:41:40 -08:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto This push fixes a regression in ahash and hides the Kconfig sub-options for the jitter RNG. 2023-11-09 17:04:58 -08:00
Documentation Revert "net: stmmac: Enable Per DMA Channel interrupt" 2024-01-07 17:12:11 -08:00
drivers wifi: rtlwifi: Speed up firmware loading for USB 2024-01-19 19:31:21 +02:00
fs Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-04 18:06:46 -08:00
include Revert "mlx5 updates 2023-12-20" 2024-01-07 17:16:11 -08:00
init As usual, lots of singleton and doubleton patches all over the tree and 2023-11-02 20:53:31 -10:00
io_uring io_uring/cmd: fix breakage in SOCKET_URING_OP_SIOC* implementation 2023-12-14 16:52:13 -07:00
ipc Many singleton patches against the MM code. The patch series which are 2023-11-02 19:38:47 -10:00
kernel bpf-next-for-netdev 2024-01-05 19:15:32 -08:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-04 18:06:46 -08:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-04 18:06:46 -08:00
net fib: rules: remove repeated assignment in fib_nl2rule 2024-01-07 15:16:19 +00:00
rust net: phy: add Rust Asix PHY driver 2023-12-15 09:35:50 +00:00
samples samples/bpf: Use %lu format specifier for unsigned long values 2023-12-20 15:28:59 +01:00
scripts Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-04 18:06:46 -08:00
security apparmor: Fix move_mount mediation by detecting if source is detached 2024-01-03 12:10:29 -08:00
sound ALSA: hda/realtek: Fix mute and mic-mute LEDs for HP ProBook 440 G6 2024-01-04 08:59:03 +01:00
tools net/sched: Remove ipt action tests 2024-01-07 18:23:32 +00:00
usr arch: Remove Itanium (IA-64) architecture 2023-09-11 08:13:17 +00:00
virt KVM/arm64 fixes for 6.7, part #2 2023-12-22 18:03:54 -05:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: rpm-pkg: generate kernel.spec in rpmbuild/SPECS/ 2023-10-03 20:49:09 +09:00
.mailmap ptp_ocp: adjust MAINTAINERS and mailmap 2024-01-05 19:08:21 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS pci-v6.7-fixes-2 2024-01-03 14:18:57 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS ptp_ocp: adjust MAINTAINERS and mailmap 2024-01-05 19:08:21 -08:00
Makefile Linux 6.7-rc8 2023-12-31 12:51:25 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.