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lib: More improvements to sbi_fifo

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This patch does following improvements to sbi_fifo:
1. Use valid SBI_Exxxx error codes instead of -1
2. The sbi_fifo_is_full() and sbi_fifo_is_empty() did
   not acquire qlock before accessing head and tail
   hence fixed it
3. Added avail member for ease in debugging and simplifying
   head/tail updates.

Due to above changes size of sbi_fifo changes from 48 bytes
to 56 bytes.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Anup Patel
2019-04-03 10:24:03 +05:30
committed by Atish Patra
parent 6dc1b0f6e2
commit 9dc95021db
4 changed files with 73 additions and 43 deletions
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1
include/sbi/sbi_error.h
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@@ -21,5 +21,6 @@
#define SBI_ETIMEDOUT -8
#define SBI_EIO -9
#define SBI_EILL -10
#define SBI_ENOSPC -11
#endif