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drivers: misc: ti-st: Use int instead of fuzzy char for callback status

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On mips and parisc:

    drivers/bluetooth/btwilink.c: In function 'ti_st_open':
    drivers/bluetooth/btwilink.c:174:21: warning: overflow in implicit constant conversion [-Woverflow]
       hst->reg_status = -EINPROGRESS;

    drivers/nfc/nfcwilink.c: In function 'nfcwilink_open':
    drivers/nfc/nfcwilink.c:396:31: warning: overflow in implicit constant conversion [-Woverflow]
      drv->st_register_cb_status = -EINPROGRESS;

There are actually two issues:
  1. Whether "char" is signed or unsigned depends on the architecture.
     As the completion callback data is used to pass a (negative) error
     code, it should always be signed.
  2. EINPROGRESS is 150 on mips, 245 on parisc.
     Hence -EINPROGRESS doesn't fit in a signed 8-bit number.

Change the callback status from "char" to "int" to fix these.

Signed-off-by: Geert Uytterhoeven <[email protected]>
Acked-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Samuel Ortiz <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Geert Uytterhoeven 2016-06-06 11:02:03 +02:00 • committed by Marcel Holtmann
commit 4360fa22ad
5 changed files with 7 additions and 7 deletions
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2
drivers/misc/ti-st/st_core.c
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@ -141,7 +141,7 @@ static void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata)
* This function is being called with spin lock held, protocol drivers are
* only expected to complete their waits and do nothing more than that.
*/
static void st_reg_complete(struct st_data_s *st_gdata, char err)
static void st_reg_complete(struct st_data_s *st_gdata, int err)
{
unsigned char i = 0;
pr_info(" %s ", __func__);