kernel/linux.git/drivers/soc/aspeed, branch v5.15.209

soc: aspeed: socinfo: Mask table entries for accurate SoC ID matching

2026-06-01T15:35:01+00:00

[ Upstream commit 7ec1bd3d9be671d04325b9e06149b8813f6a4836 ] The siliconid_to_name() function currently masks the input silicon ID with 0xff00ffff, but compares it against unmasked table entries. This causes matching to fail if the table entries contain non-zero values in the bits covered by the mask (bits 16-23). Update the logic to apply the 0xff00ffff mask to the table entries during comparison. This ensures that only the relevant model and revision bits are considered, providing a consistent match across different manufacturing batches. [arj: Add Fixes: tag, fix 'soninfo' typo, clarify function reference] Fixes: e0218dca5787 ("soc: aspeed: Add soc info driver") Signed-off-by: Potin Lai Link: https://patch.msgid.link/20260122-soc_aspeed_name_fix-v1-1-33a847f2581c@gmail.com Signed-off-by: Andrew Jeffery Signed-off-by: Sasha Levin

soc: aspeed: socinfo: Add AST27xx silicon IDs

2025-12-06T21:09:16+00:00

[ Upstream commit c30dcfd4b5a0f0e3fe7138bf287f6de6b1b00278 ] Extend the ASPEED SoC info driver to support AST27XX silicon IDs. Signed-off-by: Ryan Chen Link: https://patch.msgid.link/20250807005208.3517283-1-ryan_chen@aspeedtech.com Signed-off-by: Andrew Jeffery Signed-off-by: Sasha Levin

soc: aspeed: lpc-snoop: Don't disable channels that aren't enabled

2025-08-28T14:24:00+00:00

commit 56448e78a6bb4e1a8528a0e2efe94eff0400c247 upstream. Mitigate e.g. the following: # echo 1e789080.lpc-snoop > /sys/bus/platform/drivers/aspeed-lpc-snoop/unbind ... [ 120.363594] Unable to handle kernel NULL pointer dereference at virtual address 00000004 when write [ 120.373866] [00000004] *pgd=00000000 [ 120.377910] Internal error: Oops: 805 [#1] SMP ARM [ 120.383306] CPU: 1 UID: 0 PID: 315 Comm: sh Not tainted 6.15.0-rc1-00009-g926217bc7d7d-dirty #20 NONE ... [ 120.679543] Call trace: [ 120.679559] misc_deregister from aspeed_lpc_snoop_remove+0x84/0xac [ 120.692462] aspeed_lpc_snoop_remove from platform_remove+0x28/0x38 [ 120.700996] platform_remove from device_release_driver_internal+0x188/0x200 ... Fixes: 9f4f9ae81d0a ("drivers/misc: add Aspeed LPC snoop driver") Cc: stable@vger.kernel.org Cc: Jean Delvare Acked-by: Jean Delvare Link: https://patch.msgid.link/20250616-aspeed-lpc-snoop-fixes-v2-2-3cdd59c934d3@codeconstruct.com.au Signed-off-by: Andrew Jeffery Signed-off-by: Greg Kroah-Hartman

soc: aspeed: lpc-snoop: Cleanup resources in stack-order

2025-08-28T14:24:00+00:00

commit 8481d59be606d2338dbfe14b04cdbd1a3402c150 upstream. Free the kfifo after unregistering the miscdev in aspeed_lpc_disable_snoop() as the kfifo is initialised before the miscdev in aspeed_lpc_enable_snoop(). Fixes: 3772e5da4454 ("drivers/misc: Aspeed LPC snoop output using misc chardev") Cc: stable@vger.kernel.org Cc: Jean Delvare Acked-by: Jean Delvare Link: https://patch.msgid.link/20250616-aspeed-lpc-snoop-fixes-v2-1-3cdd59c934d3@codeconstruct.com.au Signed-off-by: Andrew Jeffery Signed-off-by: Greg Kroah-Hartman

soc: aspeed: Add NULL check in aspeed_lpc_enable_snoop()

2025-06-27T10:05:15+00:00

[ Upstream commit f1706e0e1a74b095cbc60375b9b1e6205f5f4c98 ] devm_kasprintf() returns NULL when memory allocation fails. Currently, aspeed_lpc_enable_snoop() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue. Fixes: 3772e5da4454 ("drivers/misc: Aspeed LPC snoop output using misc chardev") Signed-off-by: Henry Martin Link: https://patch.msgid.link/20250401074647.21300-1-bsdhenrymartin@gmail.com [arj: Fix Fixes: tag to use subject from 3772e5da4454] Signed-off-by: Andrew Jeffery Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin

soc: aspeed: lpc: Fix impossible judgment condition

2025-06-27T10:05:15+00:00

[ Upstream commit d9f0a97e859bdcef51f9c187b1eb712eb13fd3ff ] smatch error： drivers/soc/aspeed/aspeed-lpc-snoop.c:169 aspeed_lpc_snoop_config_irq() warn: platform_get_irq() does not return zero platform_get_irq() return non-zero IRQ number or negative error code, change '!lpc_snoop->irq' to 'lpc_snoop->irq < 0' to fix this. Fixes: 9f4f9ae81d0a ("drivers/misc: add Aspeed LPC snoop driver") Signed-off-by: Su Hui Reviewed-by: Dan Carpenter Link: https://lore.kernel.org/r/20231027020703.1231875-1-suhui@nfschina.com Signed-off-by: Andrew Jeffery Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin

soc: aspeed: socinfo: Add kfree for kstrdup

2023-08-26T12:23:36+00:00

[ Upstream commit 6e6d847a8ce18ab2fbec4f579f682486a82d2c6b ] Add kfree() in the later error handling in order to avoid memory leak. Fixes: e0218dca5787 ("soc: aspeed: Add soc info driver") Signed-off-by: Jiasheng Jiang Link: https://lore.kernel.org/r/20230707021625.7727-1-jiasheng@iscas.ac.cn Signed-off-by: Joel Stanley Link: https://lore.kernel.org/r/20230810123104.231167-1-joel@jms.id.au Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin

soc: aspeed: lpc-ctrl: Block error printing on probe defer cases

2022-02-23T11:03:19+00:00

[ Upstream commit 301a5d3ad2432d7829f59432ca0a93a6defbb9a1 ] Add a checking code when it gets -EPROBE_DEFER while getting a clock resource. In this case, it doesn't need to print out an error message because the probing will be re-visited. Signed-off-by: Jae Hyun Yoo Signed-off-by: Joel Stanley Reviewed-by: Andrew Jeffery Reviewed-by: Iwona Winiarska Link: https://lore.kernel.org/r/20211104173709.222912-1-jae.hyun.yoo@intel.com Link: https://lore.kernel.org/r/20220201070118.196372-1-joel@jms.id.au' Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin

soc: aspeed-lpc-ctrl: Fix clock cleanup in error path

2021-08-26T09:31:22+00:00

Move syscon_regmap_lookup_by_compatible() above the devm_clk_get() to avoid missing clk_disable_unprepare(). Fixes: 2f9b25fa6682 ("soc: aspeed: Re-enable FWH2AHB on AST2600") Reported-by: Hulk Robot Signed-off-by: Yang Yingliang Signed-off-by: Joel Stanley Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/20210824085522.1849410-1-yangyingliang@huawei.com Link: https://lore.kernel.org/r/20210825001214.3056193-1-joel@jms.id.au' Signed-off-by: Arnd Bergmann

soc: aspeed: Re-enable FWH2AHB on AST2600

2021-08-19T04:29:28+00:00

Recent builds of the vendor u-boot tree disable features of the BMC that may allow unwanted access if not correctly configured. This includes the firmware hub to ahb bridge (FWH2AHB), which is used by this driver. The bit to "un-disable" it is in the SCU. Set it only when the ioctl is called and we are running on the ast2600, as to not open up the 'backdoor' unless there's userspace trying to use it. Fixes: deb50313ba83 ("soc: aspeed-lpc-ctrl: LPC to AHB mapping on ast2600") Link: https://lore.kernel.org/r/20210629073520.318514-2-joel@jms.id.au Signed-off-by: Joel Stanley