Le 27/04/2019 à 14:52, Enrico Weigelt, metux IT consult a écrit :
Fix checkpatch errors:

What the main purpose of this change ?

If we apply this, any fix to stable will be a nightmare to backport. Is it really worth it ?

Anyway, a couple of comments in the patch below

[...]



Signed-off-by: Enrico Weigelt <i...@metux.net>
---
  drivers/tty/serial/cpm_uart/cpm_uart.h      | 10 +--
  drivers/tty/serial/cpm_uart/cpm_uart_core.c | 95 ++++++++++++++++-------------
  drivers/tty/serial/cpm_uart/cpm_uart_cpm1.h |  4 +-
  drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c |  6 +-
  4 files changed, 64 insertions(+), 51 deletions(-)

[...]


@@ -1048,9 +1058,10 @@ static void cpm_uart_early_write(struct uart_cpm_port 
*pinfo,
  static int poll_wait_key(char *obuf, struct uart_cpm_port *pinfo)
  {
        u_char          c, *cp;
-       volatile cbd_t  *bdp;
        int             i;
+ volatile cbd_t *bdp;
+

This was likely a false positive from checkpatch. The formatting was good, and now it is wrong as it adds an unnecessary blank line.

        /* Get the address of the host memory buffer.
         */
        bdp = pinfo->rx_cur;

[...]

diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c 
b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
index a0fccda..154ac19 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
@@ -117,8 +117,7 @@ int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned 
int is_con)
        if (is_con) {
                mem_addr = kzalloc(memsz, GFP_NOWAIT);
                dma_addr = virt_to_bus(mem_addr);
-       }
-       else
+       } else
                mem_addr = dma_alloc_coherent(pinfo->port.dev, memsz, &dma_addr,
                                              GFP_KERNEL);

Checkpatch should have told you that in case first leg has braces, second leg must have braces too even if it's a single line.

Christophe


@@ -148,7 +147,8 @@ void cpm_uart_freebuf(struct uart_cpm_port *pinfo)
        dma_free_coherent(pinfo->port.dev, L1_CACHE_ALIGN(pinfo->rx_nrfifos *
                                                          pinfo->rx_fifosize) +
                          L1_CACHE_ALIGN(pinfo->tx_nrfifos *
-                                        pinfo->tx_fifosize), (void __force 
*)pinfo->mem_addr,
+                                        pinfo->tx_fifosize),
+                         (void __force *)pinfo->mem_addr,
                          pinfo->dma_addr);
cpm_dpfree(pinfo->dp_addr);

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