linux.git/drivers/staging/sm750fb, branch master

staging: sm750fb: fix division by zero in ps_to_hz()

2026-03-31T08:33:21+00:00

ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating
that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO
causes a division by zero.

Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent
with other framebuffer drivers.

Fixes: 81dee67e215b ("staging: sm750fb: add sm750 to staging")
Reported-by: Yuhao Jiang 
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo 
Link: https://patch.msgid.link/SYBPR01MB7881AFBFCE28CCF528B35D0CAF4BA@SYBPR01MB7881.ausprd01.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

Merge branch 'staging-linus' into branch 'staging-next'

2026-02-25T15:15:08+00:00

There were merge conflicts in:
	drivers/staging/rtl8723bs/core/rtw_ieee80211.c
	drivers/staging/sm750fb/sm750_hw.c

that were causing problems, so fix this up in here so that going forward
everyone is on the same page and linux-next does not have problems.

Reported-by: Mark Brown 
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: convert logging to device-based in sm750_hw.c

2026-02-24T18:12:36+00:00

Replace pr_err() calls with dev_err() using &pdev->dev or
&sm750_dev->pdev->dev to provide proper device context in log
messages. This makes it easier to identify which device generated
the message when multiple framebuffer devices are present.

Signed-off-by: Artem Lytkin 
Link: https://patch.msgid.link/20260223204036.1780-3-iprintercanon@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: remove debug and diagnostic prints

2026-02-24T18:12:36+00:00

Remove all pr_info, pr_debug, and pr_warn calls that dump internal
variable values, pointer addresses, and structure contents not useful
for production use. This includes the complete fb_find_mode() result
logging in lynxfb_set_fbinfo(), the CH7301 DVI chip status messages
in hw_sm750_inithw(), and various debug prints throughout the driver.

Signed-off-by: Artem Lytkin 
Link: https://patch.msgid.link/20260223204036.1780-2-iprintercanon@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: Fix "varios" typo in ddk750_swi2c.c

2026-02-24T18:11:57+00:00

Fix spelling of "varios" to "various".

Signed-off-by: Ahmet Ramazan Capoglu 
Link: https://patch.msgid.link/20260224113806.1506361-1-ahmetramazancapoglu@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: Fix "programed" typo in ddk750_mode.c

2026-02-24T18:11:52+00:00

Fix spelling of "programed" to "programmed" and remove extra space.

Signed-off-by: Giorgi Tchankvetadze 
Link: https://patch.msgid.link/20260224094616.42494-2-giorgitchankvetadze1997@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: add missing pci_release_region on error and removal

2026-02-23T15:32:56+00:00

hw_sm750_map() calls pci_request_region() but never releases the
region on error paths or in lynxfb_pci_remove(). This causes a
resource leak that prevents the PCI region from being mapped again
after driver removal or a failed probe. A TODO comment in the code
acknowledges this missing cleanup.

Restructure the error handling in hw_sm750_map() to properly release
the PCI region on ioremap failures, and add pci_release_region() to
lynxfb_pci_remove().

Signed-off-by: Artem Lytkin 
Cc: stable 
Link: https://patch.msgid.link/20260216202038.1828-1-iprintercanon@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: convert logging to device-based in sm750.c

2026-02-23T14:35:51+00:00

Replace pr_err() calls with dev_err() using info->device to provide
proper device context in log messages. This makes it easier to
identify which device generated the message when multiple framebuffer
devices are present.

Signed-off-by: Artem Lytkin 
Link: https://patch.msgid.link/20260207153703.2049-3-iprintercanon@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: Clean up variable names

2026-02-07T13:33:29+00:00

Variables in sm750_accel.c follow a mix of camelCase convention
and Hungarian shorthands. Rename it to adhere to kernel's snake_case
naming convention and improve readability.

Signed-off-by: Christine Ramacha 
Link: https://patch.msgid.link/20260204145107.5521-1-christine.rv4573@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: sm750fb: rename initParm to init_parm

2026-01-27T14:48:25+00:00

The Linux kernel coding style prefers snake_case over CamelCase for
variable names.

Rename the 'initParm' member to 'init_parm' to comply with this
standard.

Signed-off-by: Madhumitha Sundar 
Link: https://patch.msgid.link/20260127121148.36632-1-madhuananda18@gmail.com
Signed-off-by: Greg Kroah-Hartman