rust: convert Task to use ARef
#774
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This is to unify the usage of all ref-counted C structures. Signed-off-by: Wedson Almeida Filho <[email protected]>
bjorn3
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May 23, 2022
vtta
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Sep 29, 2023
The port lock is not always held when calling serial8250_clear_IER(). When an oops is in progress, the lock is tried to be taken and when it is not, a warning is issued: WARNING: CPU: 0 PID: 1 at drivers/tty/serial/8250/8250_port.c:707 +0x57/0x60 Modules linked in: CPU: 0 PID: 1 Comm: init Not tainted 6.5.0-rc5-1.g225bfb7-default+ Rust-for-Linux#774 00f1be860db663ed29479b8255d3b01ab1135bd3 Hardware name: QEMU Standard PC ... RIP: 0010:serial8250_clear_IER+0x57/0x60 ... Call Trace: <TASK> serial8250_console_write+0x9e/0x4b0 console_flush_all+0x217/0x5f0 ... Therefore, remove the annotation as it doesn't hold for all invocations. The other option would be to make the lockdep test conditional on 'oops_in_progress' or pass 'locked' from serial8250_console_write(). I don't think, that is worth it. Signed-off-by: "Jiri Slaby (SUSE)" <[email protected]> Reported-by: Vlastimil Babka <[email protected]> Cc: John Ogness <[email protected]> Fixes: d0b309a (serial: 8250: synchronize and annotate UART_IER access) Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
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This is to unify the usage of all ref-counted C structures.
Signed-off-by: Wedson Almeida Filho [email protected]