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serial: msm_geni_serial: Don't use WARN_ON for console uart

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In handler_isr for console uart cases using warn_on for debugging
issues will further lead into the spinlock recursion where the
interrupt routine holds the spinlock and will try to print log
which again needs to acquire the spinlock.
To resolve this recursion issue replaced the warn_on with IPC logs
for console uart.

Change-Id: I6a0a10ff8c14a8ad6c74652f6d4e6e66ffcee13b
Signed-off-by: Venkata Manasa Kakarla<venkka@codeaurora.org>
This commit is contained in:
Venkata Manasa Kakarla 2020-09-18 16:32:36 +05:30
commit 61e281a286
1 changed files with 6 additions and 1 deletions
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7
drivers/tty/serial/msm_geni_serial.c
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@ -1944,7 +1944,12 @@ static void msm_geni_serial_handle_isr(struct uart_port *uport,
geni_write_reg_nolog(s_irq_status, uport->membase,
SE_GENI_S_IRQ_CLEAR);
if ((m_irq_status & M_ILLEGAL_CMD_EN)) {
WARN_ON(1);
if (uart_console(uport))
IPC_LOG_MSG(msm_port->console_log,
"%s.Illegal interrupt. sirq 0x%x mirq:0x%x\n",
__func__, s_irq_status, m_irq_status);
else
WARN_ON(1);
goto exit_geni_serial_isr;
}